Are you arguing that the difficulty of producing a fully functioning poc is no different today than 2-3 years ago?!
Personally, I’ve been writing software for 10 years professionally. It is much easier, especially for someone with little coding experience, to create a quite complex and fully featured web app.
It makes sense that ai models are leveraging frameworks like next js/react/supabase, they are trained/tuned on a very clear stack that is more compatible with how models function. Of course those tools have high value regardless of ai. But ai has rapidly lowered the barrier to entry, and allows be to go much much farther, much faster.