I get it, I'm a small fish trying to pay a little as possible for fully managed postgres (or MySQL before I switched to Postgres when I moved to Neon) to run my small, bootstrapped company with spiky [0] but fairly predictable load.
Best of luck to PlanetScale with this new offering, one day I hope I can use them again. I enjoyed the product and the support was great.
[0] I write software for food festivals, 9 months out of the year there is no traffic, ~2 months of the year there is a tiny trickle, ~3 weeks seeing high (but not "high" by any definition) and then 1-5 days (depending on how long the event is) there is a good deal of load but still not more than the lowest tier can handle most of the time. Like I said, I'm a _small_ fish and I don't expect them to cater to me, I just know what I want and almost no one provides it directly.