Not 200 %. Maybe 5-10 %. You still have to read all of it to check for mistakes, which may sometimes take longer than if you would have just written it yourself (with a good autocomplete). The times it makes a mistake you have lost time by using it.

It’s even worse when it just doesn’t work. I cannot even describe how frustrating it is to wait for an auto complete that never comes. Erase the line, try again aaaand nothing. After a few tries you opt write the code manually instead, having wasted time just fiddling with buggy software.

I can’t alt-tab at all out of fullscreen games on Wayland. My workaround is to send the game to another desktop. Annoying.

Even with KDE, Wayland isn’t ready yet. There are plenty of small annoynces for me, especially with the clipboard. Zoom doesn’t work right - screen sharing in general hangs the whole gui.

Lots of X based tools don’t have a good replacement yet. gpick, xkill, xclip, ssh -X, etc…