My pi-hole has almost 1.4mil+ domains blocked. It doesn’t work on most streaming services. At least in my configuration. It absolutely works everywhere else. And I do have a Roku device in one of the kids rooms. It’s one of the biggest offenders with blocked requests. Telemetry I’d assume, attempted at least.
Pff, past jobs I’ve been at, you got written up for not doing the stupid thing(policy related, nothing that would put you in actual danger).