Makes sense for their point of view. Pro tip: if you don't want your government spy on you in the democracy you live in. Store your data in another less interested in you.
Just a reminder that if you choose a friendly/allied country - they will spy on you (a foreigner without privacy rights) and share data with "your" intelligence services (those to whom you might be more interesting). If you choose a hostile country they might spy on you and "your" intelligence services will try to hack your provider because spying on hostile countries is one of the things they do...
No, see here: https://posteo.de/blog/posteo-zur-m%C3%A4r-von-der-abh%C3%B6...
The same applies to mailbox.org
German wikipedia article about it: https://de.wikipedia.org/wiki/E-Mail-%C3%9Cberwachung