In 12 years, the number of new questions asked has dropped per day has dropped by 99%, from 6690 to 78.
If you can believe it, the year-on-year rate of decline has actually increased every month since September 2025 (from 75.6% to 85.9%) - genuine free fall.
Decline in questions asked per day compared to 12 months prior: 0% means no change, 100% means no questions asked. Source
"Almost dead" is about the most charitable description you could put on StackOverflow as a collaborative enterprise. It's still...something, in the same way that Napster and SlashDot and StumbleUpon are still something even though their core activity collapsed.