dude, really? Ugh

Rushed? They're giving an entire season (next season) to the Flashpoint saga. How is it rushed?

Because the season didn't build up to it. Because they ran out of ideas for how to handle Zoom, so they killed him off as quickly as possible and gave Barry little to no incentive to make that ultimate decision. Because Barry only just got over his mom's death two episodes ago, and they purposefully killed off his father just to open more story-lines and cover up plot holes - its irresponsible, and Guggenheim got shit for less. I imagine this is how the writer room discussion went down

"okay, we can't think of a big bad for next season, so why don't we just start from scratch and try a comic storyline? ... How about Black Flash? ... O-or, Flashpoint Paradox! Or we can do, y'know, Crisis on Infinite Earths? Wait ... I-Is there a way to do all three? H-How about we reference all three and see which one sticks!? Do we agree? Alright!!"

As for your half-assed response to my question about the Harry/Jesse Plot Hole

Then they came up with the plan to send Zoom back to Earth 2, scratching her plan but not her desire to go back home.

They had the conversation after they hatched the plan. And even if they did it before hatching the plan, having her tell Harry he should stay in E1 because he clearly loves them probably isn't the best course of action given how he just locked Barry in a containment cell and the entire team is disillusioned and whatnot

He changed his mind and decided to go back to Earth 2 with her. Also, she said he should stay in Earth 1 because she thought it would make him happy.

He agreed to staying in Earth 1, and then went to Earth 2. Changing your mind is one thing. Not giving a clear reason to change your mind after tripping over your own words is another. We never saw him change his mind. It wasn't fluid or natural by any sense of the imagination. Its easy to say he changed his mind because he did change his mind, but it still goes down as an educated guess because we didn't see him make any certain thought until the moment he got up, said his goodbyes, and Jesse was entirely indifferent

I don't think you're a comic fan or you know anything about the Flashpoint Paradox story. It explores what happens when a person with the power to change time, in a moment of weakness, does just that without caring about the consequences. The entire point of FP is that altering the timeline is a mistake. The entire story starts with that and involve Flash trying to undo that mistake.

You just trivialized Flashpoint Paradox to the point where you described the Legends of Tomorrow. Also, its worth noting that with the Time Lords dead and gone, and their time manipulating machine destroyed, the concept of time shouldn't work in the Flarrowverse. So good job getting out of that hole. Unless you want to admit that the Flash writers don't have to commit to the events in LoT - in that case, you'd have to concede that the Arrow writers don't have to commit to the events in Flash or LoT either.

Then the few pedantic things

Does any of them have super vision? Even just poring over a satellite map of an entire city would take too long.

They did pore over a statelite map of an entire city. That's the whole point of Cisco and Wells' exchange. What do you think the team does when they're looking for Zoom? Check his phone records?

is her existence not worthy of a mention?

I don't see the point in an already packed episode.

I love the irony of how you just refuted every anti-Arrow ideal by admitting that minor details should be able to be skimmed over

Also, Barry clearly remembers His dad saying Garrick is his maiden name, why wouldn't his doppleganger being Jay Gartick be his first guess?

Why would he be guessing who his dad's E2 doppelganger would be?

Because his biggest enemy's name is Jay Garrick, and he holds the same family name as his father. Yet that revelation didn't ring any alarm bells at all, as if Barry was entirely indifferent to the prospect that Zoom might actually know something about Henry's doppelganger worth digging into.

As for the whole thing about Oliver overcoming the magic. In an exchange with Felicity this episode, she asked him why he wasn't immune to the magic anymore, and he said its become he's become disillusioned and lost all hope. When Curtis gave him that pep talk, he gave the speech to the crowd, and the nuke was diverted, having the city rally behind him helped him restore faith in himself and have enough hope to overcome the magic. The totem merely gives Darhk the power, and the deaths do power him as long as he's in the nexus, but as Fortuna and Reiter said, as long as Oliver has the tattoo on him, he still has a fighting chance. As Darhk's power comes from Darkness, and Oliver's power comes from light, Oliver can channel the hope and confidence he gets from the thousands of people rallying behind him into a strong enough force to wipe out the death and torment channeled inside Darhk. Its really not complex at all once you rewatch the scene before that. Hope that helped