In a recent discussion with a few level 1 autistics, the topic of masking in social situations came up and several of them expressed that they find it easier to make a good impression when they’re interacting with people whom they will never see again. Possibly because it is harder for allistics to detect the “oddness” from a single interaction, or perhaps some other reason.
I am interested in your thoughts, both about your own experiences and about the possible reasons for this phenomenon.
Personally, my social deficits and behaviour patterns are too pronounced for such a thing to apply to me. People notice my “oddness” right away, but after repeated interactions some come to enjoy interacting with me. I suspect that they do so in a capacity similar to how one might enjoy a character in a video game, rather than as a full person, but it’s better than being fully rejected, so I will take the small victory.

I work high-end retail now and I’ve worked high end waitstaff work, so I’ve been masking for so long that I learned to perform the “banter to make the guest feel welcome” without much thought.
My coworkers think (rightly) that I’m a weirdo though, so I think your theory is right.