I ask because this is exactly the type of comment one of my siblings would make, and she is on the spectrum. She wouldn't be able to understand the social dynamics at play here, whereas for other folks it's just common sense. "Optional" is not really optional in some social settings, and that's something autistic folks struggle with being aware of, much less understanding. The activity may be optional in the most pedantic sense; you won't be struck down by lightning if you decide not to participate. But there will be consequences.

All of which is another reason why this whole exercise is an awful idea, considering that the number of autistic folks in software engineering is probably a bit higher than the population baseline.