“They can’t track you through ATSC 1.”
They can’t track you through ATSC 3.0.
“They can’t track you through ATSC 3.0”
Tracking you seems to be the point of ATSC 3 /DRM for the content providers. A thread I followed (on a tech forum ) on this subject indicated that they would be tracking for ratings purposes.
This blog page indicates it can do much more.
https://blog.lon.tv/2023/08/02/atsc-3-drm-is-worse-than-we-thought/