User-hostile

Infinite scrolling is user-hostile.

Usability is not a quality that can be spread out to cover a poor design like a thick layer of peanut butter, so a user-hostile interface does not get user-friendly even by the addition of a brilliant help system.

If you've had some experience using JavaScript and HTML, then you know that JavaScript can be used to make an interface much more user-friendly (even though it can also be used to create user-hostile features, even ones that crash the browser).