I have nothing against a PoW change, but unfortunately, such a kind of hard fork would convert the "New PoW Bitcoin" itself into an altcoin. It would be pretty hard to convince most users to change to the new chain if Segwit2x really gains traction.
lol
Given that scenario, I don't think anyone would care which coin is called Bitcoin and which is called altcoin. People who are making informed investment decisions, (i.e. investing based on the tech, not on what it's called) aren't going to choose "compromised centralised Bitcoin fork" over "uncompromised decentralised Bitcoin fork". Subtle semantic arguments make you look very manipulative d5000, the truth is that both B2X and BTC are altcoins if they both hardfork
Simply using language like "fork" or "altcoin" is not as effective as more objective descriptions, such as "centralised" or "KYC/AML sympathising".
And as for "pretty hard to convince most users to change", you're underestimating the support for the Core team, and entirely forgetting that Bitcoin started with only 1 user. Cryptocurrency is a meritocratic, capitalistic environment, and the capital and the merit aren't going to follow 12 or 15 corporate CEOs that add very little value to the crypto platform they support.