I agree with you and I'd like to point out we've done studies and found that "Russiagate" in 2016 was a big nothingburger. https://www.washingtonpost.com/politics/2023/01/09/russian-trolls-twitter-had-little-influence-2016-voters/

Democrats don't want to hear it, though, because it's a very convenient excuse for their own failings. Just like them blaming Bernie Bros, despite Bernie supporters voting for Clinton in larger numbers than Clinton supporters voted for Obama 8 years prior.

They simply don't want to take responsibility for their own actions (and inaction).

There are a lot of reasons to be suspicious about trump when it comes to colluding with foreign powers, and there is even some evidence. I agree that people often take it too far, into the conspiracy theory territory. But I don't think it's quite comparable with QAnon, either in feasibility, or in scope, or in the problematic effects that it may have.

Also, the American system is, at best, only semi-democratic. The politicians are the ones who determine who is in power, much more than the people who actually vote. Are the citizens really responsible for what politicians we have? Am I responsible, as a man who votes conscientiously, who has campaigned during important elections, and yet does not have any real influence in who gets elected? Is the average person, who is just barely getting by, really expected to change the system by themselves?

We need systemic change, but we have no class consciousness, and we are not likely to get there. These facts are manipulated by the people in power.