It is baffling that you are claiming “can’t show up on time” is something professors need to work around as a reasonable accommodation.
In cases where a student shows up 10+ minutes late to a course and disrupts the lecture, what percentage of the time do you estimate the reason for tardiness is a diagnosed or undiagnosed illness or hardship.
Then maybe the easy solution is to make sure anyone showing up late doesn't disrupt anything? That accommodates everyone, is flexible, and does not unfairly punish anyone.
_THAT_ is flexibility.
Isn't it reasonable that we try to disrupt each other as much as possible as a default? It seems odd to force that responsibility onto another party. (ie it's weird to assume the professor is responsible for making sure another adult isn't disruptive)