The article focusses on Cogent Communications. Although not exclusively on Cogent plumbing, mysterious liars Cyveillance tend to arrive at my web server from Cogent IP addresses.

What Deep State connections does Cogent have?

That's a bit like asking what connections Comcast has to the Russian mafia because botnet traffic comes from their IP space.

Cogent is a low cost supplier of wholesale bandwidth and had reasonably priced colocation in some places.

Level3 and AT&T seem to be the provider of choice for US Government.