I mean, you can say anything you want. Just doesn't change reality. GNOME devs do a lot these days to prevent updates from breaking extensions.
KDE also simply doesn't allow everything GNOME allows. I love KDE and I have past contributions to KDE as well. But pretending they're on the same level of customizability is delusional. It's not a helpful or meaningful statement to make, a statement born out of pure ignorance. Plus, you dragged KDE into this, not me. Not everything needs to be a fking desktop war for no fking reason.