GK121
How about researching some facts before you try to demonstrate your wisdom?
http://www.wbdg.org/ccb/NAVFAC/INTCRIT/fy10_01.pdf
"Likely to spall the surface of standard airfield concrete on the
first VL."
These specs are current, landing pads are being built to them, and to date the F-35B has not been observed doing VL on any surface except such pads, concrete shielded by AM-2, or ship decks.