What I'm telling you is that I, as someone who has observed this happening from the beginning, am under the impression that the people posting this stuff don't come from a single uniform ideology. It's not totally baseless speculation -- I read through people's post histories all the time to get a sense of who they are. Where's your evidence to the contrary?
EDIT: Here are the profiles of the reddit users that currently have the top 5 submissions on r/pizzagate (excluding one brand new throwaway account). I looked through them a bit, but you tell me.
https://www.reddit.com/user/JackeyWhip
https://www.reddit.com/user/Truth_Bomb_69
https://www.reddit.com/user/bloodfist45
https://www.reddit.com/user/conspExec
https://www.reddit.com/user/iamkats
The first user just posts about Dota all the time. The second has only a few posts. As far as I can see only the last user has posts in r/The_Donald and seems to fit the bill of being alt-right.