I may be the odd one out here, but I don't think that the editor you use is really going to make all that much of a difference for your efficiency. Text manipulation is rarely your bottleneck when coding, so I'd just go with an IDE / editor you feel comfortable with.

I used to be a hardcore vim user but nowadays I just use VSCode with a heavily customized keymap.

You should learn basics of Vim just for quickly editing config files on servers.

For programming I don't think the speed gains are worth it. It would take more time to learn it than I would shave while using it.

Definitely. vim is hard to get used to, but after you do, it's damn powerful especially with plugins. Always nice to be able to do typing and coding entirely on the keyboard and not needing to move your hands to the mouse for something. Also, if you do any Linux cli stuff, you almost always have access to vi at LEAST. So being familiar with the tool she the gui and something like nano isn't available, is invaluable.

:wq