It really depends on your application. If you’re building a static site, if you’re not using a static site generator or writing HMTL/CSS by hand you’re wasting your time.

React et al. won’t just be 10x slower, it will also use 5x the amount of code with 5x the complexity.

People are obsessed with web frameworks because it’s more fun to engineer frameworks than make products or ship applications. Applications are boooooring. But, most of the time, you’re just wasting your time with the framework.