Yeah. The steps that come stock on some YJ's have a flimsy plastic grip thing that I'm pretty sure that you cannot find new. Anyway, the plastic piece has two studs on the bottom which attach to thick metal brackets for support. There are also 4 holes in the plastic for bolts that go into the rocker panel. What that ad is saying is that the lower studs are broken off. Each of mine only have one stud and 3 bolts, and they've stayed on just fine.
'94 YJ: 4.0L HO fi, 5-speed AX-15, Daystar 1.25" shackles, 17" JK wheels, lined tub, custom paint, Bestop Supertop, etc..
'88 YJ: 4.2L carb, 5-speed, stock everything. Banana-ish yellow. hard top. 26,XXX original miles.