That may be the case for your location and a dial-up connection, but where I live with a high speed connection, Cloudfare isn't even in the top 50.
The point of the post is...the DNS server assigned by your IP can slow down/increase ping. It hurts nothing to have the fastest/most reliable.
How did this get necroposted, must be the forum glitching..
Nope, that was me. I was catching up and apparently went a little further than I thought.