Harris chose to do something immoral because "it was the law", or it benefited her, or whatever - and you can expect her to continue doing that.

You still have to vote for her, but you also have to be realistic about who you're actually voting for.

Republicans are the party who holds their candidates up without criticism - and Dems put up Kamala now exactly because Democrats were criticizing Biden - and even though she's one of the worst candidates they've put up in years, she's still far more electable than Biden.

So yes. You need to both vote for and criticize Harris. It's the least immoral choice.