how most shitty jobs eg garbage pickup / factory work is mostly men

This is not necessarily a good thing- it's completely possible the difference is due to hiring differences. If women can't get the job, they can't die in it either.

90% of workplace deaths are men

That isn't even the important figure, because you said yourself that there a lot more men in these jobs. Here's a source, since you didn't provide any . Page 8. Men have disproportionately higher workplace deaths per hours worked. This is a serious problem that should be addressed. Since the top 3 causes of death are roadway incidents, falls, slips and trips and contact with objects and other equipment, it seems that the problem really is disproportionate amounts of men working the most dangerous jobs. Either we employ more women in those positions or we make them less shitty, either way men are getting shafted here.

I've run out of time to dedicate to a reddit comment, so I'll try to adress the rest of your points.

Again, no sources. Even citing sources doesn't prove your conclusion to begin with- You may in fact be able to demonstrate such high numbers for these categories, and they would indeed demonstrate gender-specific problems for men, but this does not invalidate the quest to fix issues for women.

Trust me, you're wrong.

I presume you're referring to my suggestion that on the balance, women have it worse. Even if I grant all of your claims, which I do not, citing a few sources of problems for men does not mean somehow women wield comparable power to men. Furthermore, even supposing women weren't somehow worse off on the balance, this would not invalidate the broader pursuit for gender equality. You don't get to throw conclusions around and just insist its true any more than the tumblr SJW types get to claim TB is sexist for no reason.

Edit: Like how men are forced to be drafted into war

You have unwittingly cited a reason why studying this topic is hard to begin with. Men are drafted because women are seen as incapable of fighting a war. Gender difference of course mean nothing in a modern battlefield where a soldiers brain and mobility are prized over other things, yet gender based conscription remains.

I would freakin' know, my country has mandatory military or civil service for men and I've served my time. There is heated discussion about making conscription gender neutral and women can and DO join the military for voluntary service.

This I think is why workplace mortality and the shitty job argument are questionable. If we don't hire women to do the dangerous work then of course those fields will have overwhelming male deaths.