People are happy because they can use an app again that they have used for up to 10 years.

My guess is that “all” technically just is a bunch of communities the app developer has chosen to be under all.

I would like to have an app with different themed views. Like a tech view showing all my tech communities. Maybe a meme channel with only meme communities and so on.

Yeah, I am looking forward to try sync for lemmy.

With wefwef I got access to All which is all I was missing leaving reddit sync behind