That's why it is difficult to answer. But giving one person something that you tell the rest of the team would make them less valuable is clearly not OK.

I think the idealistic idea is that it's a bit of "to each, according to their needs" -- people happy to support each other's needs. Though there are also less-idealistic reasons organizations do it, and why the laws had to be made.

The most ideal would be that most all the desirable things (work from home, quiet office, standing desk, good chair, flexible hours, etc.) would be offered to everyone, and then there's no special accommodation needed in most cases -- because everyone has those options to use at their discretion. It would also be more considerate of those who need something rather than prefer it -- don't make them ask, don't make them have to talk about something they might not want to talk about, don't single them out.

I'm lucky to not need any special accommodation now, but I'd value an environment that gave me those options, and I'd appreciate how respectful and supportive that is of everyone.

In any case, I'm glad that at least people who know they need special accommodation can often get it, thanks to laws. I just wish they and others usually didn't have to even mention it.