A very interesting phenomenon that I notice: when an iPhone user who recently swapped to Android posts on A/F, they often start with a long list of complaints about Android… with a question buried way, way down near the end. (along the lines of why is Android so bad that it can’t even do things exactly the way my iPhone did). AND, while there no logical reason that should bother me, it does bother me. The emotional (not logical) side of human nature is that when we hear someone start to whine about something we really like, we tend to get defensive or irritated. And that tends to jack up the ratio of snarkyness to helpfulness in my reply.
If the op knew the state of mind their whining would put me (and other potential responders) in, and their goal is to get help, then there’s no logical reason whatsoever they would ever start out a post whining about Android... before they even get to a question. But it’s not particularly about logic in either case (the poster or the responder)… we feel what we feel and our feelings often bleed through into our posts a lot stronger than we intend.
I didn’t read them closely, but I think the two posts linked in op may have had the reverse situation - that there was some small but detectable degree of whining about iPhone in the question which may have helped to bring out the snarkiness in the responders. Then again, maybe they're just jerks ;-)