Another issue with zsh plugins is that they are incredibly slow. Oh-my-zsh makes every terminal feel like it’s running on another machine over ssh
For example, to me, it is _insane_ that in 2021 async prompts are not a completely solved problem. The shell should provide a mechanism to do so easily, rather than duct-taping thin veneers over syscalls via a scripting language.
As for a replacement for oh-my-zsh itself, I had good experiences with zgen[1] but the fastest I've found is zim-fw[2] which produces acceptable start times for me[3].
[0] https://github.com/romkatv/powerlevel10k/
[1] https://github.com/tarjoilija/zgen