May I offer a 'tail-piece' to the dialogue on 'If I were' and 'Wish I were'?
Remember: "If wishes were horses... beggars would ride."
This doesn't necessarily mean beggars can't or won't ride. This is just a figure of speech of course.
Now look at this: If I were king... I would make you my Queen (says ...😉 to...😳)
This means he INTENDS to do it, though it hasn't happened yet. So, not necessarily something that can't be, that is impossible.
Whatever meaning is contained in a sentence, if one uses IF with the past tense of TO BE, in singular, it HAS to go with 'were'.
Same for 'Wish' as a verb, as in: Wish I were wrong; Wish he were back soon (uh? who?...😆)
So, all you folks were (the other 'were') right ... in a way 😃