That’s correct. I’m an extrovert with social anxiety. I think I just want to be alone, but then I’m miserable. Ideally, I’d just do everything I need to do with one or two friends.

There's a massive difference between being an introvert and being a doormat.

As with most things, the more you practice the easier it gets, so I reckon that it takes longer for introverts to grow their social skils, and specifically in the case of awkward social situations, becoming confident that they can deal with it - the anxiety is really just a lack of confidence in one's skills IMHO.

As somebody who in personality tests always tended to score as very introvert, it's quite interesting how the me now in my 50s in social situations is quite a different person from the me back in even my 30s, and I think that what makes the biggest difference by far is general self-confidence which in turn translates into caring far, far less about what most other people think of me (especially strangers), which then reduces the awkwardness of most social situations.

Specifically in this case, two decades ago I would tend to react as per that meme, whilst nowadays I just casually send it back pointing out it's wrong (politelly but firmly), though for example in a restaurant I might actually point out that it's wrong and if it turns out I would have to wait for the correct order still take it if I'm low on time and what I got was something I could just as easilly have ordered since my original choice was mentally pretty much a "pick one because you have to pick one" rather than a firm choice - in other words, I deal with it as I would deal with a junior developer implementing a wrong requirement in a project I was leading: point out the error to avoid a repeat and then find the most effective way to deal with the consequences.

Depends on how wrong it is. I’m unable to digest pork and will say something if there’s bacon on my food. I don’t like sun dried tomatoes and will happily pick them off.