I once interviewed a guy for a clearly vanilla JS position and he only could work with React. He literally could not declare a variable in vanilla and display it in a hello world html element.

I completely understand his approach, was someone breaking into web dev and people demand frameworks and not vanilla, but definitely felt weird to me.

Then they make modules using modules and others use their modules to make modules too! Each module has little snippets copied from stack overflow because you inevitably have to have code that does things eventually.