It is an Instance.

Lemmy.world also hosts Voyager at https://m.lemmy.world and MLMYM at https://old.lemmy.world

It was made for tablets in Android 3.0 Honeycomb.

I don’t know about others but MIUI (Xiaomi/Poco) have an option to disable it.

Switching between apps might be bit slower, however going back is much faster and is more used. So I find it faster overall. And feels much easier after the initial learning part.

I think it was part of Tablet UI for Android 3.0 Honeycomb.

I feel the same, that’s why I turned it off.

There is an option in MIUI to swipe down on left side for notifications and right side for Control Center.

Yes. AFAIK it’s just a copy of iPhone feature.

Nah, I don’t like it. Vivo Oppo phones do it and it’s very confusing for me.