Earlier quoted context omitted.
Every time I stand up new name servers I have to add the glue records into the root servers or the name servers do not exist. In fairness to me I keep forgetting the trend is to shove everything into big centralized DNS servers as it is something I would never do at least not as a primary.
Afaik, those glue records are held at your TLD's registry and served by the tld nameservers, not the root servers. It might be nice to get a zone transfer for every tld, but that's not possible for the public. (I understand there's some way to get many of them, but $$$$)
I should add that I have been adding name servers to the root servers since 1998. I've just never managed one of the root servers and I guess nobody on HN has either.