You may have just caught the wrong end of it timing wise. They used to be super stable and cheap but being a low cost provider they have no real buffer to absorb even minor hikes let alone the shitshow we saw in ram/ssd.
This has been my experience too. I migrated a few dozen projects from DO to Hetzner, and my monthly bill went from about $80 to around $162. The only thing that changed was Hetzner's rate hikes.
Now I'm in a weird spot. I could downgrade some servers, but changing them would immediately move me onto the new pricing. So I either pay more for less hardware, or pay a lot, lot more if I ever need to scale back up.
They're the first, I strongly doubt they'll be the last to adjust prices that much. The big cloud providers might have enough margins to eat the cost increases, especially since bare VMs are only a small part of their offer. But I don't see how the smaller, more VM-focused providers will be able to absorb the high hardware prices.