No comment by anyone proves anyone is a liberal or conservative. No comment anyone posts proves anyone is anything. That's the nature of the site.
The user raises concern that a right leaning forum has right leaning filters but fails to mention you see that with some left leaning forums. Based on the shock this person has never visited a left subreddit. Does that mean he is right leaning? Or does this person seek out a right subreddit because they are doing research?
I would guess research because the shock tells us he doesn't visit these places often and he doesn't visit more conservative places lile truth social because they censor at a higher rate.
There is my reasoning. You're challenge is to disprove this.
I asked "how do you know," just admit you don't know, and are just guessing.
Saying "you are not a conservative" (not you but the comment you chose to defend) when you can't possibly know that is a ridiculous argument to make.