I really don't remember well, long long time ago in Window (XP?) either you can select multiple folders and zip each of them separately and/or you can select multiple zip files and extract them to separate folders within a single context menu

No reason to if you like 7zip. They all do the same thing just look different for the most part.

Why use 7zip over this?

doesnt windows now have all the similar tools default?

The feature built into windows (even after recent update) is a lot slower