[efdee]

How can you say that? PHP and ASP were dumb text template processors. JSX creates object graphs. They are almost nothing alike at all.

[pjmlp]

Mixed content on the same file, looks pretty much the same, regardless how it is implemented.

[efdee]

The problem with ASP/PHP (or at least, the one we are addressing here) always mixing presentational logic with business logic. Something you still shouldn't do, and React doesn't advocate doing so at all.