Most people already put their expensive thin phones in thick cases, so, no, besides dumb teenagers, I doubt anyone would care.

But simultaneously, I don't know if that many people would consider it to be selling point either nowadays. Battery capacities don't seem to shrink as quickly anymore, such that the phone probably gets damaged/stops receiving updates/is replaced anyway by the time the battery would need swapping.

Although perhaps that'll change now that the changes between even 2-3 year models are getting pretty small and software support periods are increasing.