> at worst the back glass might crack
this isn't broken??
Technically, yes. Realistically, no, because it's not the sort of crack that will make the back shatter; the crack is, somehow, under the surface glass. On my phone, it's entirely cosmetic — it knocks the resale value down, but that's about it.
Fun fact: my phone took its dive after the crack. No water got in at all.
Calling it a crack when it's made with crack-resistant glass doesn't give the right impression of how undamaged it really is, compared to one's expectation that it shattered into a million pieces and embedded itself into my carpet like grenade shrapnel — it ain't like that.
In fact, my partner's iPhone and my previous one both broke in independent incidents when both were in cases. My new phone, I don't use a case, drop it regularly on asphalt, concrete, and it's even taken a dive into hot dishwashing water — and it's just fine.
I know somebody will come along with a story about how theirs smashed into smithereens but, for my money, Apple builds their phones to last.