This really does not sound healthy. The game is released, for a certain amount of money. If people don’t like what they get for their money, they simply should not buy it.
But by now gamers have been so trained to expect to endless content treadmills and all their ilk like mtx and battle passes that publishers/developers get egged on if they don’t work on their game 24/7 and forever.
From where I sit, good and critically acclaimed games are plentiful and if you can make a game then it’s easy to make a good one: just don’t be a greedy idiot and make the game you want to play.
If the developer doesn’t want to be badgered about finishing his game then he shouldn’t be selling it unfinished, it comes with the territory. The problem is they went and complained.