why doesn't Century Link recommend any Netgear routers

> why doesn't Century Link recommend any Netgear routers

   Ask CenturyLink?

   Assuming that that's a question about CenturyLink DSL service, ...

   Good judgement?  Netgear seems to have lost interest in DSL, and
CenturyLink often uses a feature which no Netgear DSL modem or
modem+router supports:

      https://kb.netgear.com/30296

   EOL models like the D7000[v1] (which I use) or D7000v2 (about which
I've read) have enough firmware bugs to discourage anyone who does a
little testing.