Those plastic clips work better than the traditional backing nails they used to use. Those nails couldn't hold back shit in the presses wood they used.
I have to agree, I just bought these and was at first skeptical, but they seem like a much better engineered solution. The two-part clip expands in the hole, greatly increasing friction to keep it in vs a static (and smooth!) nail, and their heads are also bigger than those little tacks reducing chances of the hole in the backboard failing.