if its the "Carry" model, you will be fine (it has the heavy square slide). If its the base line model with the rounded slide then you might see some issues if you shoot it a lot.
Its not like every new gun self destructs after a few hundred rounds. Mostly the guns that have issues are the .40 and 10mm guns with the round slide. I think guys don't put the right spring in them and they crack on occasion.
My guess is the gun this thread had a bad slide and wasn't "normal" for even the round slide guns.
It's the full frame,full size poly,rounded barrel.9mm.Model number 999104.Black barrel.4.5 long.