This is mostly why I stopped going on Reddit. At least on X I have more control over what I see and mostly just follow trustworthy accounts. I just assume most of the commentary on mainstream American subreddits like politics is infiltrated by foreign actors and bots.
I left because I couldn't stand the echo-chamber and hivemind attitudes. There's also way too many people arguing just for the sake of arguing, even though they agree with your overall comments. It was slightly more manageable when you just stuck to very niche sub-reddits like gardening, landscaping, cozyplaces, sub for tv-shows etc. Now it's nothing but bots and AI garbage. The platform is beyond saving.