You're unsure about a product because the landing page is positive, and even go so far as to not trust the authors any more? That does sound like a strange expectation for a landing page, which is usually intended to make you want to use a project.
I agree with the GP that hyperbole on a landing page (or anywhere else in the project’s communication) makes me not want to use the project. It communicates that the project lacks confidence that a down-to-earth description would speak for itself.
I understand the attitude because there are a lot of corporate websites which similarly claim the moon and the stars and when you dig right down a lot of it is bullshit. I have worked in places like this.
Such companies tend to imply that their product can do anything and tend to have pages of verbiage rather than the brass tacks README with examples you get on a good open source project's github page.
