As the front end community moves to a decentralized component based model, it doesn't make sense to keep your styles seperate. Being able to see exactly what a component does, how it renders, how it looks, how it manages state, in my opinion has these benefits:

1 makes the code easier to test 2 easier to onboard new developers 3 better developer experience 4 easier to scale 5 easier to create decoupled chunks for single page apps/progressive web apps.