I have an ergodox and a moonlander, and I shared the same frustration on initial use; however, after about a week of pecking around and doing a good number of typing exercises (e.g. https://www.keybr.com/, https://www.speedcoder.net/) using a basically modified mac layout, I was back up to 99% for standard use, and definitely a bit faster for common things (e.g. typing usernames/passwords).

I don't use tons of layouts, I'm mostly there for the ergonomic benefits, which I definitely feel vs a magic keyboard and trackpad.