Yes, that is true, but just think about it- if RWFSFASXC constantly glitches out, and he's also a shadow figure, that right there can indicate that Scott Cawthon, creator of the series,
might have planned out the games out all along, or at least for Glitchtrap.
Springbonnie and Shadow Bonnie are both females, too, meaning that since Glitchtrap is a fake Springbonnie, that might mean that Glitchtrap was in FNaF2.
That was the whole point of the post, to share my thoughts about this, and also, I'm still trying to figure out if Shadow Bonnie's actual name other than RWFSFASXC, because it seems a little sus for his name.