I'm at a total loss as regards your complete and utter inability to acknowledge the faults of those you support whilst demanding others should uphold standards which you clearly do not consider apply to you.
If I was still supporting Platner following very credible accusations of sexual assault, using such monstrously idiotic claims such as people aren't voting for a pastor, then I would not go anywhere near any threads about Trump's sexual comments and actual assaults because I wouldn't have a leg to stand on. Any complaints I made about Trump would show me to be a complete hypocrite and you'd be fully entitled to level that accusation at me.
Please explain to us all why the reverse is not applicable.
While your post was obviously a reply to another user, I'll still chime in here...
I assume what you're referring to are the accusations of sexual assault that were levied against Trump, and the double-standard employed by many of his followers considering his situation juxtaposed against that of the stance they take against Platner.
The standard of "dump 'em and cut bait if they have these kinds of serious skeletons in the closet" isn't so clear cut when the perceptions of high stakes/"high risk if we lose" are in play.
In the case of a Maine senate seat, the stakes aren't very high at all, so it's easy for Democrats to refuse to support Platner and just let Susan Collins have this one. For all intents and purposes, Susan Collins would be running as a Democrat in most other states with her policy positions anyway.
Collins is pro-choice, pro-environment, pro gay rights, pro ACA, pro-Dreamers/immigration, has good ratings from the HRC on LGBT issues, is okay with legal pot, gets a decent rating from the NAACP, and votes against Trump well over half the time. Nothing catastrophic to the Democratic agenda is going to happen if she wins.
There's relatively little risk in taking a principled consistent stance and calling for Platner to remove himself and letting Collins win this one... Democrats and Independents in the state will get most of what they want either way.
However, if someone like Ron DeSantis was running as the Republican in Maine, do you think for a moment Democrats would say "Platner should just drop out of the race, I won't support him because of his infractions, even if means DeSantis gets to win this one"? Not a chance...