Just do the Amazon rental for a weekend. If you don't like it, return it. You'll see the difference.
After the repack many markets have multiple HD channels sharing the bandwidth previously allocated for one OTA HD channel. In addition, as ATSC 3 is being deployed these channel sharing agreements are only becoming more common.
In addition, some cable providers are taking this over-compressed feed and compressing it further.
In many situations, streaming is the best option for picture quality now.
I did some comparisons in the Philadelphia market: https://www.somesortofweatherexperiment.com/tags/tv-source-p...
Even flagship events like the Super Bowl are not exempt to from low detail, compression artifact video in this market.
When NBC last broadcast the Super Bowl there were two 1080i broadcasts (NBC and Telemundo) of the same game sharing the same physical channel (along with some sub channels). It was borderline unwatchable IMO.
I’m sure the situation isn’t as dire in all TV markets, but I think we are looking back on the days during which we could unilaterally state that OTA provides the best picture quality.