I’m curious though, how and why are the broadcast versions so different from the Blu-rays? I don’t get why they’d slather inappropriate amounts of DNR and EE all over the BRs and leave the TV versions untouched.
Things like this can be earlier scans done that were originally made and cleaned up for DVD, but also used for HDTV streaming. The picture quality is lower, but it’s not as big of a deal for DVD, and HDTV presentation might have been a lower priority (especially when it was less common). Along comes blu-ray and a push for the idea that sharper and smooth is good, while grain is bad.
In most cases, the older HDTV transfers aren’t shown much once the blu-ray comes out.