HC can feel impermanent for those reasons, and yet it's also been up and running since what 2019? That's pretty long to feel like there's a sword of Damocles hanging over it, at least for me. I kind of think if it was going to fall, it would have by now.
(Add in how much I've played by now and if HC disappeared tomorrow, I'd still be happy I got the time I had which I didn't have previously. This is not to say everybody would or should react the same way)