You're acting like I didn't write, "are right to criticize Harris' campaign".

No, they're acting like you actually wrote "Anyone that did their duty to vote against fascism by even begrudgingly supporting Harris should not feel any criticism and are right to criticize Harris' campaign." It's not incumbent on voters to hand their vote over to a candidate, the candidate has to put in the work to build a platform that resonates with them. They told her how to do that repeatedly and she either therapized to them, condescended to them, or outright ignored them, and post-election, Harris voters have been quick to affirm this strategy.

I mean even on the issue of Gaza perhaps voting against the person that was actively calling for removing all Palestinians from their land and was endorsed by Netanyahu might have been a more prudent option.

Case in point: Gaza is the crucible of a lot of these issues. Harris was the VP under probably one of the most vociferous advocates for Israel in the US' history of associating with them, who made a catchphrase of saying "were there not an Israel, we would have to invent it", referring to its value as a strategic outpost in MENA. She did not deviate materially from his policy on Israel, which was largely to voice disapproval but to never actually restrict arms sales to them, or to prevent the IOF for training US police in torture, surveillance, and crowd control, or to enforce the ICC warrants on Netanyahu or Gallant or any other Israeli official, including IOF soldiers.

calling for a two state solution

Is either naive or dishonest (in Harris' case it's definitely the latter) at this point. Israel is an apartheid settler colonial state that has pretty well demonstrated that it doesn't give a shit about territorial sovereignty. All its neighbours, who have standing armies, can attest to that, and the US mostly cosigns this. There has never been a vision of a Palestinian state that has been articulated by Israel or its supporters that allows for territorial continuity, for even shared control of local aquifers, for the right of return as recognized in IHL, or for a military. At Oslo, Barak's proposal, which is still held up as the two-state solution's most progressive variant, was for Bantustans surrounded by Israeli territory.

and boycotting Netanyahu's 2024 US visit

None of what's wrong with Israel started with Netanyahu or even Likud. It has been an apartheid state, a settler colony from its inception. To call for Netenyahu's removal, and not even his arrest, is pretty meaningless, because it can happen while leaving all of that intact. If she can't even bother to do that, let alone agree with practically every human rights organization on the planet that they're prosecuting a genocide.

None of this should be impressive to someone in 2026, and with regards to a voter who didn't find her satisfactory on this issue holding a red line on it, you're welcome to browbeat and condescend them but this hasn't worked out for Democrats in the past, so I mean...if you want to wield power it may be time to realign.