One thing these models are extremely good at is reading large amounts of text quickly and summarizing important points. That capability alone may be enough to pay $20 a month for many people.
When I read (when everyone reads), I'm learning new words, new expressions, seeing how other people (the writer in this case) thinks, etc. The point was never just the information. This is why everyone becomes a retard when they rely on the "AI"... we've all seen those horror stories and don't know whether to believe them or not, but we sort of suspect that they must be true if embellished. You know, the ones where the office drone doesn't know how to write a simple email, where the college kid turning in A-graded essays can't scribble out caveman grunts on the paper test. I will refrain from deliberately making myself less intelligent if I have any say in the matter. You're living your life wrong.
And, like Wikipedia, they can be useful to find your bearing in a subject that you know nothing about. Unlike Wikipedia, you can ask it free-form questions and have it review your understanding.
Unfortunately the LLM does not (and cannot) know what points are important or not.
If you just want a text summary based on statistical methods, then go ahead, LLMs do this cheaper and better than the previous generation of tools.
If you want actual "importance" then no.
Sure, but that's not why me and others now have ~$150/month subscriptions to some of these services.