Here is what undermining Democracy really looks like.
Obama's Justice Department and FBI spied on the opposition party's presidential campaign.
As to Hillary's actions, she and the people around her had terrible instincts. But we're not talking about lying and cheating in a campaign. The issue is trying to overturn election results.
As long as we have the archaic electoral college system, electors will face pressure for their votes. Obviously, threats of violence should be prosecuted. Attributing such threats to the Democratic party is reprehensible.
Boycotting the inauguration destroys democracy? Maybe if Obama didn't go to Trump's, you'd have a point. But I don't think you want to go there, do you?
Jimmy Carter should not have said what he said, and if Hillary said that the same goes for her. I won't defend that thinking, and maybe they did influence people.
But, for the sake of argument, let's say everything you included in your post did qualify as an attack on our democracy. Even under those circumstances, would it have any bearing on the assessment of the aims of Jan 6 to stop the certification of the democratic election?
I don't think so. It could be a contextual argument. But what we now know about the White House's efforts to stop the certification of the election on Jan 6, while the mob surrounded the Capitol, makes it hard to paint it as anything other than an attack on democracy. I would argue the greatest since Lincoln.