I get your point as a tech person, but really, have you ever had this issue with your parents and iOS devices these days? I mean even most 30-something people don't know what those choices are about, that Whatsapp is worse than Signal...
Maybe there should be something like a "root" or "developer" setting that can be enabled for advanced users, but for the average person the default for all this must be the best possible option already and they don't need to worry about it.