I highly agree. I once registered a domain through them that happened to be my last name but coincidentally also the name of a company. They restricted me from using the domain and never refunded me the yearly fee for it (citing trademark reasons, although under Swiss trademark law, someones legal name is not a trademark violation, especially as it was just my personal website and I wasn't working on a competing product/service). Only weeks later someone else successfully registered it without such issues.

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.

That makes it sound like dealing with Hetzner is easy. Is the case?