I would consider that definition to be overly simplistic and failing to capture an important point that is often referenced when describing traits of an introvert. Introverts find social interactions, especially in large groups, to be draining. I believe this to be a key distinction between people that avoid social interaction out of misanthropy or frustration or fear or depression or any of a myriad of other reasons that a person might seek solitude over the company of others.
The reason and motivation behind the desire to avoid social interactions plays a role in determining a course of action in responding to them and ending them early. If you find them draining, a simple “sorry, I gotta get going”, when you start to feel drained, is all you would r really need. However, if social interactions trigger a negative emotional response, then more tools would be needed.
Here are a few references on the topic of introvertion:
https://www.psychologytoday.com/us/basics/introversion
https://www.medicalnewstoday.com/articles/introvert-definition
There are studies that show introvertion is not a “preference”, but rather the result of increased blood flow to certain parts of the brain. Ref: https://pubmed.ncbi.nlm.nih.gov/9989562/
There are other studies showing a “high reactive” or “low reactive” response to unfamiliar events and stimuli in infants and it’s correlation to behavioral inhibitions as toddlers. While it requires some extrapolation, this suggests that introvertion may be a a condition of “nature” rather than “nurture”. Ref: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4283938/
Let me know if you are interested and I can send you additional peer reviewed studies and papers on the topic. Personality and human behavior is a fascinating topic.
Yes, I did read those articles. Allow me to highlight some of the points from those articles which bolster my argument that the avoiding our limiting of social interactions of introverts is rooted in finding those interactions to be exhausting and mentally draining.
If you have any articles or research studies to suggest that introvertion is not associated with a psychological drain or that it is a condition of choice, I would appreciate reading them. I’m always receptive to new information that may change my mind on a topic.