Power hungry intel chips and graphics cards are inconvenient in laptops when it comes to battery life and cooling. It is especially noticeable if you spend any time using an M-series macbook pro, where performance is the same or better, but you get 16 hours of battery life. I prefer to use thinkpads, but apple just has a big technological advantage here that stands out in the UX department. I really hope advances are made quickly by competitors to get similar UX in a more affordable package.

I had the same issues. I mainly use Doom on my linux machine, but on mac it is distractingly slow. d12frosted/homebrew-emacs-plus seemed to reduce the lag, but I've had other issues with it, so have gone back to vim.