It is important when traveling abroad with limited data .. half my data was consumed by Amethyst in Japan last month and in Mexico brfore that .. I am not complaining .. but it is an important point ..
Discussion
In fact a desirable design choice is - when in data saver mode , store all new notes automatically in draft mode and sync them automatically when in wifi ..
Yeah, data saver won't help you with nostr.
When you're traveling abroad, why don't you just buy a local data only sim? Use a cheap burner phone for your existing sim if your current phone can't use two sims but you still need to get phone calls and SMS. Local data sims are almost always way cheaper than roaming charges.
eSim services like Aerlo , are pretty much the same price as local data sim .. around 10 dollars for a 2 gigs per week option ..
Amethyst eats away , almost a gig .. that is around five dollars a week for international travel .. not a deal breaker for me, but this should be addressed or at least informed to the users ..