If this is referring to snowflex, this is actually completely false. Snowflex gets easier to turn on as it breaks in. I'm sure there is a point of diminishing returns in which it just gets simply too old, but for the first 5 or so years, it continually gets better, faster and easier to turn on.
A completely bone dry snowflex surface will absolutely not permanently damage your base. Remove wax/diamond grind...yep for sure, but absolutely not perminant damage.
But yeah, falling on snowflex will definitely cut you without wearing proper gear.