I'm guilty of using the term "platform" ...
and I think I get your point ....but to use "platform" in the sense that different mfg's have so many different ways of doing things....that I have always looked at most 1911's as a unique platform ...vs the typical Sig concept of DA/SA decocker as a very different "platform"...compared to a Beretta platform ...or a Glock ...or whatever....seems ok to me ...??
Maybe I'm just a 62 yr old redneck yuppie ...and can't help it ...