Because the large percentage of people is a few people doing hello words or things of similar difficulty.
Not every software developer is hired to do trivial frontend work.
The large percentage of software development is people doing hello world or similar difficulty. "CRUD apps," remember?
Hopefully they are not live-coding that crap though. Do you want to make those apps even more unreliable than they already are, and encourage devs not to learn any lessons (as vibe coding prescribes)?