I think that's a load of BS because they don't want to do it.
There's no real force on anything and it's a metal insert that bolts into the glass, very very little likelyhood of damage.
A wake tower yes absolutely, I mean you're putting 1000's of lbs of force on it when you're pulling up a boarder, but a tent pole holding a tarp? Yeah they are blowing smoke up your ass IMO