I guess it depends on the definition of "scrub." Using MY definition, I've never damaged an LP :-)
On the other hand, I do tend to buy a lot of used records from various sources where record cleanliness is not considered next to godliness. These frequently have nits embedded in the surface which, if not removed, can have very nasty effects on the sound (and maybe the stylus). So I keep a good strong light on the record while, yes, scrubbing, so I can find those suckers and banish them. I've never yet found steaming to be necessary but I may try it some day.
On the other hand, I do tend to buy a lot of used records from various sources where record cleanliness is not considered next to godliness. These frequently have nits embedded in the surface which, if not removed, can have very nasty effects on the sound (and maybe the stylus). So I keep a good strong light on the record while, yes, scrubbing, so I can find those suckers and banish them. I've never yet found steaming to be necessary but I may try it some day.