I disagree on the main point. Some people really can't do certain things that others can, or can themselves do some things much better than they can do others. I am very aware of this, because I have alwyas had dyspraxia and associated visual processing problems. I have never been able to drive, and I do need help in finding my way in unfamiliar places, so that, for example, I always book 'meet and assist' services when I travel. If people blame me for my incapacities, that hurts me more than anything: far more than ordinary insults, being sworn at, etc.
However, I do try to structure my life so that I don't have to do the things that I can't manage, even though this means some sacrifices, rather than expecting to 'have it all' and that other people must step in and take up the slack.
So it rather depends on the situation. If you have become everyone's go-to person for assistance with everything, that is a bit CF-ish of them. Even if people genuinely can't do something, it doesn't automatically make it your job to do it.
If, on the other hand, you are the one who is making the plans, socially or at work, and then complaining that others aren't prepared to fit into your plans without assistance, then YABU and need to either be prepared to provide or arrange assistance, or to cease making such complicated plans that involve other people.