Yeah a lot of the public internet is hosted by all-in-one vendors like Google Sites, Wordpress, Squarespace, etc, and object stores like S3, GCP buckets, Cloudflare, CDNs. The website owner just uploads the content, the hosting vendor does all the TLS, protocols, load balancing, whatever else. If the hosting providers update the protocols they use a huge chunk of websites will just immediately use the new one with no interaction whatsoever required on the part of the owner of the website.

If they add easy support in NGINX and HTTPD, then its easier for self-hosted endpoints to change as well, with minimal to no effort on their side.