This is interesting, but I don't think it is universal. Specifically I don't think it matches me. I find social contact even with e.g. my girlfriend or my son tiring. Even though e.g. my girlfriend is amazed at just how relaxed I seem to be. And in a sense it's true - around people I am comfortable with nothing will faze me. I can sit in a meditative state with total chaos around me with ease. But whenever I participate in any way, it drains me. Doesn't mean I don't like spending time with people, but if I participate in conversation or engage in any kind of way, no matter how enjoyable or chilled out the situation might be, I need alone time afterwards. Lockdown was so relaxing for me. Though it seems to be predominantly in-person contact (though I don't really know where e.g. video calls fall), sometimes even online interactions drain me and I just totally shut down and ignore the outside world to relax.

As an interesting addendum: To me the type of social events that are most draining are opposite of yours. When I can set myself apart (such as holding speeches, even in front of huge crowds) or by "drowning in the crowd" like in large events where I can just ignore everyone most of the time, I'm fine. It's like being alone. I held the commencement speech for my university in front of thousands of students, faculty and a TV crew. Piece of cake. Small groups where people expect interactions, on the other hand, even if they are people I'd totally trust and where I can let my guard down totally, are brutal on my energy levels and far more stressful as well.