I recently released a quick tool [0] to visualise latency for websites from around the world (as tested from AWS Lambda), and was surprised to have folks let me know it convinced them to setup a CDN.
Do you have a CDN in front of your websites, HN?
[0]: https://onlineornot.com/do-i-need-a-cdn
I suspect if most blogs want to improve their loading time they would have better results getting rid of the 20MB of trackers before breaking the web a little further with stuff like cloudflare.