Sure. The problem with some frameworks is that they attached server events to things that should be handled on the front-end without a roundtrip. For instance,

Sure. The problem with some frameworks is that they attached server events to things that should be handled on the front-end without a roundtrip. For instance, I've seen pages with a server-linked HTML button that would open a details panel. That button should open the panel without resorting to sending the event and waiting for a response from the server, unless there is a very, very specific reason for it.