I used to believe that. Trump got elected twice. And now he's spewing the most ridiculous lies that are swallowed whole by the MAGA faithful (don't get me wrong, there are similar problems on the other side of the political spectrum. Each side occupies their own bubble). I don't believe it is bots anymore. Now even real people on LinkedIn are posting with the same characteristics.
There are some bots, for sure. There are disinformation campaigns but people are organically amplifying them. While social media is artificially amplifying them to maximize engagement. The social media amplification is why many of these people are so angry. Anger is the ultimate engagement hack.
Some idiots, but mostly bots.