I think there is good reason to warn people of dangers, but I've always been a practical DBA, using whatever is in my toolbox and works. If inconsistent results are a problem, then certainly re-examine your use of NOLOCK (or any other tool).

I hate that so often we don't get details or good information on the various tools available to us, like undocumented tools. I think we'd be better off if everything was very well documented, especially the dangers, and let people use it when it works in their environment.