1: Enough that there aren't mass desertions at the front lines.
2a: Continuing to fight typically has 2:1 support in what polling I have seen. My country's governnment is absolute dogshit, but if Russia invaded my country you're damn fucking right I'd want to fight them about it even with our shit government.
2b: Your article assumes a US coup, it does not show that there was a US coup. It is not weird that the American embassy wanted to negotiate with potential new leaders, doing so does not mean they masterminded a coup, and Zelenskyy was never even mentioned in the Nuland-Pyatt call. There have been two elections since then. It is also not difficult to believe that the protests against Yanukovych were legitimate considering his massive unilateral lurch in policy just beforehand.
2c: Absolutely shocking to suspend pro-Russia parties while literally being invaded by Russia. It should be noted that the incumbent party has a majority either way and suspending parties did not grant them any power they didn't already have. Further, the parties suspended represent a minority of the opposition.
2d: Sorry to tell you this but fighting a war is actually quite expensive. Is this approach the best one? I have no idea. It hardly seems relevant to what your second point started as. If you'd rather Ukraine didn't do this, it's going to need alternative financing, which means more support from its backers, not less.
2e: I do think that it should just be gifted, and some of it is. If your preference is that they get nothing at all then Ukraine could equally just refuse the lend-lease. Again, the better solution here is more support, not less.
2f: You know Ukraine was a capitalist country before this war started, right? But once again, if you don't want this to happen, Ukraine needs more unconditional support, not less.
3: How much say do you think the US has? This article is literally about Russia trying to get the US to decide on Ukraine's behalf and the US saying "that's not our choice". What is the US going to do if Ukraine decides to stop fighting? Stop supplying arms that the Ukrainians don't need anyway if they're at peace? The thing that I assume you want the US to do anyway, given the comment you're responding to?