The 737’s like all airliners have shear pins fitted to their U/C’s. They are designed to fail during abnomaly high loads to protect the wing stucture and therefore the integrity of the fuel tanks. In the case of heavy landing the main trunions will fail and the gear will punch it’s way through the top of the wing (Good turn of phrase Bmused55!) but the fuel tank is forward of the forward mount and the structure that gets dammaged is the composite panel above the U/C.
It will be interesting to see the other dammage to this aircraft.

Rgds Cking