I was, but since the battery is not that good enough, I am not using it now. But I wish I could buy PinePhone Pro which I expect to be enough for daily driving. If I buy any new phone, that would be PinePhone Pro (unless Pine64 releases something newer by that time).

WhatsApp in Waydroid.

Plasma.

The first reason I prefer it is that when internet becomes unavailable while connected to the router, it changes the icon. The second is that is settings easy and KRunner is very handy. The third is that it looks cool for me, especially while using Latte Dock. It's transperancy effects are very impressing. The fourth is the integration of server-side-decoration for Qt apps (with Latte Dock).

TL;DR, the above reasons are completely based on look & feel and ease of use

In fact, many icons look cool 😍

I prefer rolling distro and more comfortable with Arch. I can't wait for new updates at the earliest!

I haven't tried Lomiri yet. Arch doesn't ship with it yet, and Manjaro is still in alpha (not even beta) stage with it.

No. I installed and applied them manually.

Yes, performance is very laggy and there are a lot of bugs still. But it reached the point where it can be used as daily driver (as I do use).

Phosh is there for those who don't like Android-like experience, and it is also more stable than Plasma Mobile and bugs get fixed faster and the development is more active.