yeah formula E is silent, thats the point 😂
Are you aware of what Formula E is? Because being silent isn’t “the point”, currently, in the past, or the future.
You can read about their mission here to further enrich your mind on this matter.

Sustainability: Environmental Excellence - ABB FIA Formula E World Championship
How Formula E takes the lead on sustainable practice
but remember, formula E is racing and therefore entertainment, i'm all about f1 ditching the current dyson vacuum cleaner and go back to the v8 or v10s, but thats for pure entertainment value. loud exotic will always be there, i'm sure you won't miss a few camry or civic on the road.
Imagine watching Star Wars with no sound, and I’d prefer you re-install the muffler on your Civic my friend.