Good to see more developments in this space. I quite like this service, which is a little further than Hetzner and has several models to choose from: https://www.infomaniak.com/en/hosting/ai-services
"highly unmanaged" didn't fill me with confidence, and "uses our API" is a very weird reason to give for not offering support. I wrote off ever using them for anything beyond email after that reply.
You will at least not need months of training and tough exams to be an expert in Hetzner Cloud. It is simple, but that's the point.
Worse even, in my account panel I still had control over the e-mail service of the domain, so there was most definitely a pretty bad security critical bug there.