AITAH for correcting waiter on wine variety?

First of all, I will acknowledge that interpretation of this interaction is highly dependent on context, tone and body language but my wife insisted that I acted like a snob, so I am interested what do you think.

We were traveling for vacation and were staying at a hotel. After a whole day of driving and being quite tired from drinking a bit too much beer the day before we went to sit down to a pub nearby as the hotel bar was closed. This pub was not a fine establishment by any means and was obviously focused on beer drinkers.

As I am from a wine making family and because of my not so good time with beer the day before I was craving some red. The menu said that they sell some wine by the glass but didn't mention what wine. So, when our waiter came I asked what wine did they have and if they have any red. This waiter was quite young and was noticeably an Ukrainian, presumably, a refugee (I didn't really care but it is important for the story). He went through some wine varieties and mentioned about 4 white wine varieties. Before one of them he said "and for the red we have [white wine variety]". I thought I misheard so I asked again if they have any red. He again said that they only have the [white wine variety]. Then came an awkward pause. He was looking confused and to be honest a bit annoyed and I was looking back at him waiting if he will correct himself. Then I said, "I am sorry but [white wine variety] is not red.". Maybe I said it a bit more annoyed than I wanted but I really wasn't trying to be rude. He then visibly panicked, said sorry, and went to get a supervisor, who told me the wine maker but not the variety. Even more annoyed and seeing that my wife was visibly upset I gave up and ordered the red because I didn't want to cause further issues.

My wife was then seriously upset because she felt sorry for the waiter and said that I was acting like a snob and should leave a big tip as an apology. She said that the guy is obviously young, is an Ukrainian and I shouldn't have expected him to bring me a wine list in a beer pub. That I shouldn't have pressured after the first wrong answer, shouldn't have made the pause and should have ordered and not correct him.

To be honest I don't think that what I did was wrong. Maybe my tone was off which I was sorry for because it didn't feel like it at the moment. I was just tired and a bit annoyed that even after asking second time and then waiting, the waiter didn't correct himself or offer to go and take a look. However, I believe that even if the pub is aimed towards beer, if the pub offers wine, I am in the right to ask what variety and the sweetness level as I feel that is the absolute baseline for my choice. I didn't expect them to bring the bottle or anything (because honestly it probably was from a keg). I also do not think that I should heavily take into consideration the age or background of the waiter and that I should be satisfied with an obviously wrong information especially if given twice and I believe that I provided enough room for correction. I think that what I've received was a bad service and I didn't want to tip much. I always treat waiters with respect as I've waited in the past but I expect a certain baseline of menu knowledge or at least a willingness to verify information. I do not think that the background or age of the waiter excuses bad service and that because I corrected the waiter I should apologize.

Was this too entitled or wine snobbish behavior? AITA?