It doesn’t cost much to keep the lights on. As far as I know, X post-acquisition is not investing in innovation anymore.
Musk might have been right that shifting to KTLO mode was a good idea, but the company would still be better off if someone other than him had bought it and done the same thing.
I assume he means, how much work you let the event loop do without yielding. It doesn't matter if there's 200K lines of code but no real traffic to keep the event loop busy.