For everyone to see? I don't see the point for this.

The only reason it might be useful is for charity, but that's a rather niché case.

Especially your out of sync related arguments are strongly opposing the notion of showing the lightning balance.

Since you asked, I will answer from my point of view, where I wish more development resources would be spent on.

I experience sometimes huge performance problems with Amtheyst. When scrolling & reading too much, the app becomes unresponsive & I can barely get out of it.