Honestly I'll rather prefer a bigger multi-threading/MP usage to reduce deadlocks because Emacs is an ecosystem, even reducing it's startup time to the minimum

Honestly I'll rather prefer a bigger multi-threading/MP usage to reduce deadlocks because Emacs is an ecosystem, even reducing it's startup time to the minimum it will never be like Vim, those who do not use EXWM simply can run Emacs daemon at their desktop startup to much with the client Vim startup time, BUT those who use Emacs as a DE like me I bet all prefer far less freezing like during packages upgrades, feeds fetching, Gnus etc vs the not really relevant startup time...