Yes those are. But WordPress community, and WordPress itself, shares a long history misusing tags heavily. And that’s why the big audience never learned use tags — but that blame goes to admins (and to social media where tags are raped totally).
But my non-tech users learned to use tags very easily and quick and now they just love those small buggers.
But tagging must (ok, should…) be planned and not use tags with only one topic. For that need we have search.