You will notice the pushback on TRUMP when the issue of Kamala and Brown is brought up, because Trump for a long time was well-known for cheating on his wives, although he continues to claim the Daniels thing never happened.
Still - two things are relevant. Trump didn't cheat because he wanted to advance his career. Not so much an excuse, but we keep hearing about Kamala's solid credentials when it appears she didn't get anywhere without the patronage of an older man she was --- seeing.
But secondly, this goes back to what I've said for thirty or more years - you don't get to belittle someone's morality UNTIL you have the moral high ground. If your candidate smoked dope - you don't get to get all pissy when THEIR candidate smoked dope. If your candidate has shown questionable sexual morality - you don't have any case to point at someone else's. "Caesar' wife must be above suspicion" as the saying goes.
FWIW - this is also why I don't get into the morality stakes regarding Kamala and Willie Brown. Sure, it's a bit vulgar and it points to the fact that she almost certainly didn't rise to prominence because of intelligence or skill.