The courts get to decide what's legitimate, and they have decided those claims are not legitimate. It ends there. If you now want to say ok maybe Trump appointed judges, republican governors and a 6:3 conservative supreme court are all conspiring to rig the election for Biden, then you have to look at the claims if you don't want to look like a raving lunatic... and the claims are fucking retarded, so where do we go from here?
You don't literally think anyone who has feefees that the government might be bad gets to violently take control of the capitol, do you? I guess you said you do, but I'm trying to steelman you here as best as I can.