I think the interference conspiracy theories are massively overstated. It doesn't explain why Biden won the last US election, I'm guessing there was no interference whatsoever in that one because they came to the 'right' result? The Tories will lose the next election and Labour will likely be in power so this interference thing obviously isn't going well?
I think what certain people don't like is that most people have a centrist opinion which is then divided by issue. Immigration divides people but it doesn't mean they should be pigeon-holed on the left or right. You can be a socialist who doesn't like immigration, Corbyn just for example was quite famously very anti-EU. In today's world you'd throw him in with the likes of Farage on the hard-right which is really bizarre.
This pigeon-holing is exactly how Labour lost swathes of the north. It has nothing to do with interference, the worst offenders for this view are those on the hard-left who are so entrenched that they can't think of anything else to do except call everyone else thick.
I don't really care for the likes of Farage, he tried to become an MP and failed miserably and then you have people like Lawrence Fox who last week failed miserably. It's proven that these people actually have literally zero power or influence beyond their own minority base where they're nothing more than grifters. Given their irrelevance nowadays, why the Russian state or anyone else for that matter would put any resources into these people is beyond me.