but yeah, there's generally a problem with the UI/UX -- like as a consequence of the problem you're describing, you have to clear your current selection before scrolling to paste from the kill buffer. it's all foibles you learn about and adjust to but it makes the environment feel unpolished on a first impression.
spacemacs and doom have a better impression out of the box but there are just some core problems that they can't fix with a clever configuration. one that frustrates me regularly is auto-complete (company) triggering a network call that's bound to time out (because of user error) and the whole editor hanging for the duration because the completion call happened in the same thread as the UI. actually, the single threaded nature of most of emacs is probably my biggest complaint...