I've noticed that most extroverts think like this. People who are extroverted usually have problems understanding what being introverted is like, and usually just see it as a different label to give social anxiety a more socially acceptable image, since it seems it's easier to understand for them. They assume everybody is an extrovert, just like them, but some people just feel social anxiety and call themselves extroverts. What you call "the traditional use" seems to me like the traditional misconception about introverts.
I'm an introvert myself, and I don't feel social anxiety. I grew up thinking I was shy, since my introversion seemed to be traditionally and socially identified with shyness, but at one point I realized I didn't feel social anxiety at all. It actually seemed to me that extrovert were much more worried about social situations and how they were perceived socially than me.
I don't try to explain my introversion to extroverts because I've noticed most of them don't get it. This makes it hard to use as an excuse, or even as a reasonable reason for your behaviour. I get dragged to social situations sometimes because extroverted people just assume I'll have fun if I just relax a bit, and sometimes I accept because I don't want to be rude. The result is I don't feel anxious or anything like that, I just get bored fast and want to go home soon. If I were actually interested in some activity being an introvert wouldn't get in the way, because being interested in it would keep my interest. It's just that social activities don't usually keep my interest for too long. They just feel like a boring waste of time to me, not something that makes me anxious.
This doesn't mean I don't enjoy social situations sometimes. I enjoy parties and concerts and stuff like that. I'm just the kind of guy who leaves the party early with some kind of excuse, not because of social anxiety, but because I'm starting to get tired and bored with the whole thing. I don't ever use "I'm an introvert" as an excuse, since I know people will not get it. I don't use it and I don't see other people use it to explain why they do certain things or don't do other things.
I'm an introvert myself, and I don't feel social anxiety. I grew up thinking I was shy, since my introversion seemed to be traditionally and socially identified with shyness, but at one point I realized I didn't feel social anxiety at all. It actually seemed to me that extrovert were much more worried about social situations and how they were perceived socially than me.
I don't try to explain my introversion to extroverts because I've noticed most of them don't get it. This makes it hard to use as an excuse, or even as a reasonable reason for your behaviour. I get dragged to social situations sometimes because extroverted people just assume I'll have fun if I just relax a bit, and sometimes I accept because I don't want to be rude. The result is I don't feel anxious or anything like that, I just get bored fast and want to go home soon. If I were actually interested in some activity being an introvert wouldn't get in the way, because being interested in it would keep my interest. It's just that social activities don't usually keep my interest for too long. They just feel like a boring waste of time to me, not something that makes me anxious.
This doesn't mean I don't enjoy social situations sometimes. I enjoy parties and concerts and stuff like that. I'm just the kind of guy who leaves the party early with some kind of excuse, not because of social anxiety, but because I'm starting to get tired and bored with the whole thing. I don't ever use "I'm an introvert" as an excuse, since I know people will not get it. I don't use it and I don't see other people use it to explain why they do certain things or don't do other things.