I think the current valuation of twitter is around $9B? Which answers the age-old question "How do you make $9B?"

You start with $40B

But I don't know what metrics you're judging by other than general ~vibes~ but 75+% loss of valuation is a pretty clear crash and burn. Additionally people are still leaving the site because it's such a cesspool, so yeah running a site into the ground with fewer users and is way easier than running a site with more users.