There's a difference between web technologies and "the web" as an amorphous philosophical construct. Web technologies, as you stated, are obviously doing just fine. I'd argue the latter isn't. To be more specific, the latter as it was envisioned (in a way that I, and I speculate, GP also still subscribe to) 20+ years ago.

"The web" implies an interconnected ecosystem of websites. That the same tech has found adoption with walled gardens is irrelevant.