It's sort of what happens when OOP is demonized for years and FP is lionized. They've created what are effectively classes but with implicitly auto-generated private property names and a lot of weird edge cases where things can go pear shaped. But hey, it's functional and 'new' so it's good, right?

In fairness, the JS world has never had well engineered OOP GUI toolkits like you find in the desktop space. If you've never used JavaFX then ReactJS probably seems pretty magical. If you have, then, well ...