The California GOP isn't that bad, I think. It's just that Trump makes their job impossible.
No, not really. Last time I checked Trump wasn't president in 2010, 2012 and 2014.
Also, the FL Democratic Party gets a bit too much hate here IMO. Sure, their organization is kinda terrible (especially considering that this is such a pivotal swing state), but had Rubio not changed his mind about not running for reelection, they most likely would have won that Senate race and both seats would now be controlled by the Dems (Nelson/Murphy). They came within 1 point of winning the governorship in two R wave years.
The OH Democratic Party is probably worse than the FL Dems, honestly.