I don’t think it is. Gnome is usable without this behavior that, as it states in the repo description, is mostly an attempt to replicate the behavior of windows or KDE. This can be good for some users, but Gnomes goal is not to replicate other DEs, but to create a good user experience.

The default gnome dock behaves differently, but is (mostly) usable without this extension, just via different patterns. If you expect to have a desktop that consistently behaves like KdE, you’re probably better off switching to KDE (which is funny given some LDE users rice their desktops to almost look like gnome).