[pseudalopex]

They explained correctly. They illustrated correctly. They appeared familiar even if they used the wrong preposition in filler text.

Texts can mean individual messages or conversations. The preposition could have been confusing but not an error.

Saying something many familiar people say does not appear unfamiliar.

It is not necessary to use an iPhone to read users' complaints, read Apple's guidelines, and measure contrast. This is a genetic fallacy.