This article is very likely misreporting the US National Weather Service radar outage page you can find people reposting elsewhere in this comment section. The NWS page has been updated to say it does not reflect a current issue. Anecdotally, my local NWS weather radar is working fine. Also, weather doppler radar and ATC "radar" are very, very different technologies.
Given that the FAA issue also apparently relates to communications, it does seem like it might be related.