This is my complaint as well. KDE certainly has advantages and neat design ideas, but I always come across some major bugs that make my device unusable.

Definitely not saying GNOME doesn’t have bugs as well though.

Rust is a memory-safe language. So in this case, it could result in more stable software.

No, custom desktop environments and window managers can’t be used. What you’re referring to are applications which simply modify window geometry automatically, which emulates a tiling window manager.

Not only that, you asked for their opinions.

Or my personal favorite: