Many Democrats may not care but there are many who staked their life meaning into the Democrat cult who now know the truth it was all rigged. They're not needed anymore; the campaign support, the fundraising, the throwing feces at their "enemies" - it's all irrelevant now because elections can happen without them.
There may be a few who fooled themselves but that’s a problem of the kind of people who are attracted to Dem politics. They knew their guys lie and cheat and invested themselves anyway. Where I used to live it was because, “the big man is keeping the little man down!”.
Well, as you say it’s all irrelevant now.