I think the poster above may have accidentally worded their response a little too personally, but their point is valid and not against neurodivergent people (or, at least, there is a version that is close to their argument that is so).

It's perfectly fine to ask people to change be careful in their correspondence to a specific person to avoid certain issues.

It's not fine, however, even for neuro divergent people, to expect social norms to change for everyone to match their particular preferences.

If we read the original article as representing a request from the author to specifically not answer emails to them by apologizing for replying late, that's a perfectly fine request that anyone corresponding with them should follow (once they become aware of it). If we read it as a general recommendation to everyone to change this clear social norm, then it's not fine, the justification given (one person finds this puts some kind of pressure on them, and others might too) is not strong enough to warrant everyone else changing their behavior pre-emptively.