While I don't think of Pelosi as the boogie woman Fox News paints her as... Dem leadership needs to move on from her and her lieutenants. Dems need younger leadership with less baggage no matter how good Pelosi is at fundraising.
The saying, "if something isn't broke, don't fix it" is the opposite of this case. She may be able to raise money, but something isn't working, is broke in the democrat leadership, and it needs fixed.
Right now, they should be in easy win mode. Everything Trump says, or does is extremely offensive to over half the populace, and the republican led congress, and Senate are still extremely unpopular. Yet instead they let Trump, and republicans get away with mocking, trashing, and blaming them for everything. Even things you'd have to be insane to believe is the democrats doing.
On top of which they continually fold, and lay down on several issues that should be core to the party. Plus they just don't even run in certain districs they may actually have a chance in (not talking hopeless elections). Meanwhile the regular everyday voters go out fighting, and protesting for the things dems give up on, and end up making a difference. Or they run in districts the Dems gave up on, and win. They even lost against what should have been a gag contender for president.
So something, or a lot of somethings aren't working. So I agree, a change is needed. Changing ineffectual leadership is a good start when you continuously, and pointlessly take loses left and right.