I received some similar stabs in something I bought - either in a kit or bought separately. Mine were also already clipped - or, really, just weren't made with the little tab at all, so no need to clip. I wouldn't use the word "fake" to describe them, though. They're just aftermarket stabilizers. Anyway, I've had no trouble with any Cherry type stabs I've ever used. Once the cap is installed they all work great.
I've built 2 40%, a GH60 rev C, and a Clueboard, all with Cherry type stabs and somewhere in that bunch are some aftermarket stabs similar to the ones in your photo but I wouldn't be able to find them by typing on the keyboards.