That's great (actually, I don't know if it is, because I've never used it) *IF* you know what you want to watch. Not that we watch a lot of linear TV, but we'll occasionally just scroll through the guide and see what we want. I don't like scrolling through Amazon, nope, nothing there, let me scroll through Netflix, nope, nothing there, let me look at Disney+, well, I guess I could watch that one show, was it on Amazon or Netflix?
Streaming works for some people and linear TV works for others.
I'm just starting to use JustWatch, so I am no expert. My wife and I often have a hard time deciding what to watch next. This is nothing new with streaming. It has always been a problem. Anyway, putting everything we might be interested in a single watch list with trailers and suggestions makes it a bit easier to manage.