It is really not obvious that it would be worse experience than sitting it with your fiberglass hull. (Clearly worse than an aluminum hull though.) This happens all the time in the Pacific Northwest where I boat, floating logs. Worst are the deadheads, waterlogged so they float vertically just below the surface. Never known anyone to actually sink, but there've been a few destroyed propellers and thousands of bucks worth of hull repair.
Again here in FL dragging sandy bottom is pretty common and most of the time no big deal, maybe scuffing your skeg. Many times what happens is you're out of the channel on a plane no problem, then you slow down come off a plane and oops the water is too shallow and your lower unit /prop hits being the lowest part of the boat.
Hitting a rock might bend your prop and you might need to replace, many carry a spare prop on board as it can be replaced relatively easy even out on the water with an outboard.
That same situation with a foil boat would be disastrous, again just one very expensive and dangerous mistake.