You cannot speak for most people. Not in the slightest. Most people don't even have a choice, let alone a clue that one existed for so long. Since mid-2016, v3 was on by default. It took severe effort to get back to a stable v2 platform. They even forced unwitting users to watch a 30 minute video about v3 to further dissuade users from ever venturing off the reservation.
"WHY ARE YOU STILL HERE?" -- ahh, yes, the quintessential dialogue ender. Because I choose to be here. I guess it never dawned on you that my disapproval of v3 does not mean I should just up-&-pack my bags. You did not do that when Microsoft changed its policy on licensing, did you? You didn't just up-&-leave OZ land for Canada. Did you? My staying equally has no regard on the success (or lack thereof) of v3! You have a dizzying intellect if you can draw those conclusions.
My arguments are based on facts. Technological facts. Every attempt by a v3-spokesperson ends with emotional pleas or slurs of some sort. You've included 2 in your last paragraph alone. You cannot defend the deficiencies of v3 on merit alone. Hence, the Cult of V3 (because it is a cult if you dismiss the faults and only see the fauna) resorts to low-level tactics of character assassination.
"The war is over" is a statement about why the V3 folks haven't bothered trying to defend V3 from your sort of attacks any more, rather than a defence of V3 itself. It's not because V3 is indefensible: it's because most people feel that they've got better and more rewarding things to do than argue with V2 proponents who are clearly wedded to their particular opinion and are never going to be budged from it. From that point of view, the V2 / V3 discussion has gone the way of religion and politics - the two sides are locked in to their respective positions and any "discussion" is only going to lead to insults and "arguments" that the one side finds self evident and the other side finds incredulous.
My overall contention is that even if V3 is not as simple as V2, it is still good enough that the benefits it delivers is worth the change. @Spacebux clearly disagrees - which again leads to the question, if you feel so strongly about it, WHY ARE YOU STILL HERE? If V3 is such an abomination, why don't you spend your own time & effort learning the UI of a completely different site that is simpler and that would make you happier? By staying, you are actually contributing to the metrics that tell Chess.com that V3 is a success - if you and all of the others genuinely discontent with V3 really did leave, that's actually the most likely way you would have an impact on their decision making process.