I honestly couldn't care less about how the calculator app looks, and I'm sure you could find a more "modern" one on fdroid. The real problems are things like google pay not working (not a deal breaker imo, but would be nice to have)

I don't think the radiation should be too big of a problem, they are in a very low earth orbit, well inside of the Earth's magnetosphere. Not to say there are no health risks, they lose a lot of bone and muscle mass, but radiation shouldn't be a big concern

Noo, Joker! Don't implicitly assume the continuum hypothesis!

I had to look up what poutine was, and I can assure you that we don't have anything like that in Italy

It's not so weird, and if someone wants to take the extra risk with their own payload (and get a discount on the launch, i imagine) i see no problems with it.