> My workflows involve opening and closing up to hundreds of terminal or tmux tabs a day. I do everything from the terminal. Just imagine that opening a new tab in a text editor would take half a second every time.

This sounds like overoptimization on a neglible time loss for what is essentially an unique (and dare I say: broken?) workflow.

I use terminals a lot ... but I work with 4-5 day-persistent terminals that I open once a day and keep in the background. The QoL effects of omz outweigh microtuning startup times significantly.