and very nearly succeeded

How can you say this? Do you think that there's some artifact in the Capitol that grants the power of Legitimate Governance? Do you think a dipshit protest-turned-walking-tour where the cops only saw fit to fire on like one person and only a couple of cops were killed by the rioters is enough to reverse an election in the country that is the global superpower? The country that overthrows governments abroad with much greater violence every few years?

Is it possible that a couple of politicians would have been beaten to death? Yeah, in a somewhat different world, but the rioters did not begin to approach doing anything in the same dimension as a "successful coup". There was no connection between what they did and what a group would need to do to take over the country, and imagining there was even anything in the Capitol that could be used for a bit of leverage (like if some pols got caught), that still wouldn't be a coup and the feds would send SWAT in to blow some brains out.

It's just classic American aggrievement politics, the hogs put on a show for you so now it's "1/6" like it's a new 9/11 combined with the fucking burning of the White House in 1814. It was never going to amount to anything on the magnitude that you're asserting, or even several orders of magnitude below it. There is no conflict in which like 6 people die (multiple from rank stupidity) that can connect even notionally to the outcome of overthrowing the most powerful country in the world!

Well, unless it's like a judicial coup or some other situation where people are exercising their political power directly, to be fair. But it's not like Trump was doing the smarter thing and using executive orders to lay the ground for toppling the government, and even then there are so many barriers he'd need to get over that he didn't even have the cognitive capacity back then to grapple with.