Youtube forcing login to access content when using VPN

Used the standard, login prompt to confirm you are not a robot

The purpose of the VPN is to AVOID being tracked. "That's A No From Me Dawg"

I tried various VPN and countries to find which work. It's not universal but once a connection is flagged, perhaps for good DDOS reasons, its login or bust. Client changes made no difference when using same VPN once flagged by Youtube. Appears to be specific IP or connections as different VPNs in the same region will work.

Is this normal?