This is The Lingo. It is something people use when they try to say bland obvious stuff while sounding like they are tech wizards that deserve a high wage. I know the pattern, I studied philosophy, where you also have some writers that express simple ideas with complex lingo, while you have others where the lingo is complex, but it is needed, because the thought is also complex. For the uninitiated telling the two apart can be hard.

In this case that just means: our landing page needs to convince more people to sign up without getting too bloated.

This means it implies a linear correlation between amount of content on the page and sign ups. More content, more signups. But not too much, otherwise it is bad again.

In essence it is a bad take on a probably real problem, expressed by a person that needs to hide behind the lingo.