No you don’t sometimes have to believe what some people say.
Their streaming technology brings the massive 4K files down to a 7GB per hour rate. That is already with their compression algorithms at full tilt over anything else.
Do you honestly think they can double even that compression? It’s simply not possible in the here and now.
What’s being reported in your stats and what’s actually coming out on the TV aren’t necessarily the same thing.
There are many many gradients to their algorithms and you are seemingly triggering the very bottom end one and probably at a loss for quality over just sticking the top end version of 1080p.
But if it works for you and you believe it to be up to UHD scratch then my opinion is irrelevant anyway.
I initially thought the quality would be terrible.. But remember audio forms the biggest part of total file for a movie.. NOT video.. There are different encodings for audio..such as 5.1 / 7.1 / atmos.. These make the file sizes larger.. With basic stereo u can shrink that down to 192k bit rate audio.. Great for tv viewing..
Also remember the main stream compression is x264 but x265 is gaining traction and that basically halves the file size.. So instead of getting 50GB bluray u can get it around 26GB now..
Most new tvs now support hevc x265.. So hence better compression.. And yes soon a new codec will be out maybe by Netflix and will half the x265 bit rate
And as for quality its actually perfect when watching on my tv and i can notice the difference between on 1080p and. 2160p on my tv