MVC - because spending 50% Of your time looking for the other file with the almost identical name is fun... wait now we need the view... nope back to the controller again... why can’t these files be next to each other...

It’s ironic that this is done in the name of “Separation of concerns“ -

You know what separates concerns: having everything that affects this component - in one place. That’s true separation of concerns.

I’ve worked in multiple frameworks in multiple languages and nothing does it better than modern react (especially with webhooks).