Stats[1] indicate about 1.5-1.7 [2] websites exist.

This would mean letsencrypt certificates make up more 2/3 of the internet!

[1] https://www.websitehostingrating.com/internet-statistics-fac...

[2] https://www.internetlivestats.com/total-number-of-websites/

Edit: Sounds like these include renewals from the thread, but it’s still over 10pct of the internet!