That’s a drastic overstatement. I believe what AJ007 is referring to is OpenNIC, which is a DNS service that provides custom and free domain registration using custom TLDs like .geek and .chan. It forwards existing TLDs to the root nameservers so that it’s interoperable with the current DNS system. It has its pros and cons- I used it for a few months without any major issues. It certainly doesn’t require building your own ISP to sidestep the current root nameservers.
OpenNic: https://www.opennic.org/
Essentially the same problem as if people started picking random non-RFC1918 /8 IP space ranges and numbering their networks into them, or choosing their own arbitrary AS numbers.