One can only become cynical and bitter.
Also, I'd say that manipulation of CSS classes and HTML elements with JS gives the developer quite a strong understanding of them.
Also, the whole extreme programming style was prototyped around hilariously big (for reasons called "USA" not bad code) payroll software for Chrysler.
Oh really, don't: that's what the discussion should be about.
You are certainly right to a point, but a better way to redirect positively is to ask: how can we come to a state where similar feats are possible today in a company setting?
i mean they might just be smarter, but that's far from the only explanation. they could be working harder, or have better mentorship, or not have to deal with productivity sinks you do, etc.