Never had a problem boiling strings. As you say just clean up the pot afterwards no different that cooking anything in a pot. Boiling strings cleans out the built up gunk and brings them back to life. People have been doing it as long as the electric bass has been around.
Boiling isn't a bad move, but a soak in denatured alcohol is much more effective. Boiling returns the new string sound, but only briefly. With alcohol, the strings usually go through another cycle as long as when they were new.