Can tailgate dropping damage the truck?

A little while ago, there was an ice storm that locked my tailgate with ice. I tried to open it but couldn't as it was stuck but I realize now not closed. So I went to the car wash after, and the tailgate dropped when the hot water made contact and melted the ice. It felt like I got hit by something from the back.

So I inspected the tailgate afterward and everything seems ok with no damage. The backup camera and the auto locking/unlocking mechanism are still working. It seems to be reinforced with steel and solid cables. But just wondering, do people commonly drop it? Can it damage it eventually? I try to be very gentle when lowering my tailgate and this was an exception out of my control.