It's amusing to me to see all the hate for PHP, especially when the original lazy gripe was that people hated when faced with code that was mixed with templates. So completely different than the dominant modern front-end frameworks.
JSX just reverses the story, it's js with islands of html tags thrown in it instead of being html with code in it... in the end when you look at an average presentation component it's still like 90% html tags and some js mixed all together...
JSX is not, and I mean this emphatically not, "HTML tags". They're a tree of objects. That they sometimes represent HTML is orthogonal to why it's fantastic.
To elide all of the power and powerformance that JSX provides in the situations where it's appropriate as just "HTML tags" fundamentally misunderstands what they are and why they are powerful.
Data structures are more than text. This is a good thing.
GP could've easily been talking about the many other libraries/frameworks that DO use templating, though: Template Syntax in Angular/Vue, Glimmer in Ember, etc.
It's even more amusing how gross a generalisation you are making. I for one dislike PHP for all its little nasty surprises like implicit type conversion. Even 15 years ago I had zero problems with code and templates mixed in a file.
