Basically right now, Donald Trump is involved in a high profile Political Conspiracy. This means that you are going to find a large number of crossover between the conspiracy, politics and Trump subreddits.

The fact of the matter is that a lot of the Trump is a Russian Agent stuff is too speculative for the regular news and political forums, so it ends up here with the UFO sightings and Philadelphia Experiments.

Now, as I said this is pretty high profile. This means that a lot of people are interested in it. A lot more than the usual fringe theories* that are discussed here. From your perspective I guess it must look quite weird to see a sudden influx of people who do not share your outlook and try to challenge it, but think about it, it's a pretty natural thing. Like some athletics subreddit filling up with traffic when the Olympics are on.

Look at things from the other perspective. The Russian stuff, while speculative, has a lot of legs. Follow the money, look at who is being put in power and what they stand to gain from lifting sanctions. Imagine that you are thinking about these things and you come and post here.

The Russian stuff is flagged as unverified. Nothing else seems to be flagged as unverified. Not the cheese pizza = child porn stuff, not the reptiles control the monarchy stuff. There's a high scoring thread where a guy is blaming Obama for Trump not keeping the White House complaint-line open. Put yourself in their shoes and think about what this place looks like.