I do think it was a little bad move because now you can't even test planetscale and the memories of its free stuff still might haunt some people
I didn't enjoy doing it. I felt bad but I don't regret it at all.
You should absolutely regret making that promise. As I understand it you're wrapping hardware at AWS and GCP, and likely have since the beginning, so you should absolutely have understood that this was a bad promise because it was dependent on recurring costs towards those suppliers that you did not have control over.
In pre 2010 era, we all knew Unlimited Bandwidth, Unlimited Storage was marketing and no one believes it. There is some sort of limit, and as long as we dont get caught it is fine. Free "forever" offering, Unlimited were all best effort. And It isn't just tech, but also politics. I mean they all say it but most wouldn't believe it.
And then we have a whole new generation of people who dont have this as norm anymore. They do believe everything should be free and could be free. Utopia is just around the corner. The cost of anything is so abstracted and muddled they have no idea why anything is priced as such.
Maybe we shouldn't have been so accepting of long lists of asterisks/footnotes in ads or ToCs that invalidate much of the promotional material?