I think what really annoys the far right is how the far left seems to get an easy ride.
There's plenty of left-wing conspiracy theories. The current ones seem to be that the Capitol Police were allowing it to happen (not just through incompetence). This is given a huge amount of credence, but I'm willing to bet that it will mostly be proven to be conspiracy thinking and hysteria.
It's actually a bit exhausting.
It's not at all clear that the police are "opening gates" on that one shakey zoom shot (hundreds of people, but it's just one zoom shot that shows it, hmmm). It looks to me like an officer has their hand forced aside as a large number of protesters push the barrier, which looks a bit like they are "opening the gate" (it's not a gate). And they do abandon the post once they're outnumbered and no longer have a barrier, so what? If there's a shot from another angle that makes the police look better, I expect very few people on the left will want to share it.
I don't expect any real thanks for pointing this out. Rather, like hysterical conspiracy theorists, I expect people will then say "Yeah, well ... how about the selfie?" (You mean, the cop who was encouraging criminals to post evidence of their crime?). That's what conspiracy theorists do, they don't stop and critically reassess their position when they're shown that a piece of evidence is weak. They don't realise that they're caught in a bubble where poor evidence is amplified as long as it supports their position, they just assume that the debunker is a bad guy and reach for a new piece of evidence to use as a weapon.