I don't think the answer to this question is really as simple as yes or no, because there are no specifics. It depends whether or not the lazy person is happy as they are - if their laziness is infuriating to other people with, but the lazy person is happy within themselves, then maybe other people need to just mind their own business. However, if that laziness means that other people have to pick up some of the lazy person's work, then that's not on, and someone needs to have strong words with the lazy person and tell them to pull their finger out! If the lazy person doesn't want to be lazy, but is in some kind of depression or rut, then perhaps therapy of some kind would be a good idea, to allow them to find a way to fix their problems. Or it could be down to bad diet or lack of exercise, or both - in which case, good friends might offer support and help to combat these problems.
I'm pretty lazy myself, but I try to do things to motivate myself, and I see it as my own responsibility, but not everyone is able to do that - some people need help to see a way out.