It's been this way for over a year now. For the whole time, they've been porting the game over to Javascript.
My advice? Don't be a patreon for this game. Most of the staff is lazy, the entire leadership can't plan for life (even though Adobe said they'll kill flash in 2017, the devs didn't start porting this game until flash legit died in 2020. They should've started earlier.). And for some reason, they make a tone of money – 30K per month of Patreon alone.
I'm pretty sure this game won't die, but it chugs along content way too slowly. My advice? Just download it from this site
For the most part I hate piracy, but honestly, the devs aren't even worthy for this game.