Yes, it was in the case of an big outbreak on a single rock. I have found if you have a single rock with over a dozen bubbles and no other rocks in the tank have it, it is easier to take it out and boil it to kill everything. If you just pull off the bubbles, it almost always grows back as the base of the algae is inside the rock.
I have done this several times to single pieces of rock that show an outbreak. Ya, it kills everything, but the other rocks in your system will make it live again in time, where as if you don't completely rid the rock of the bubble algae, you will be fighting not only on that one rock, but others eventually. To me, it is easier to kill the rock and let it become live again than spend years fighting bubbles. I have seen tanks where it gets out of control and it is scary.