It depends on the kind of acceptance. If you accept that certain things will be harder for some people and make reasonable accommodations so they can get on with their lives, then people can get on with their lives. If you accept things will be harder so use that as an excuse for people never doing anything without removing any of the obstacles stopping them doing things, they'll never get anything done. It's really just addressing the problems versus deciding the problems are inevitable and giving up. That said, giving up can be a lot less miserable than refusing to acknowledge problems and yelling at people when they don't keep up.