Yup. Some broadcasters intentionally use blur filter so that the encoder can compress more.
Less spatial/temporal detail = easier to encoder to compress into smaller file size.
Meanwhile, in Europe freeview channel, broadcasters make use of B-Pyramid, extremely long GOP, max 4 reference frames (limit for H264 L4.1 1920x1080 at 30fps), max 9 reference frames (1280x720 at 60fps), max 16 B-frames, extreme distance between QP value for I, P and B frames
All above are bad news.
B-pyramid = ancient or first generation decoder can't properly decode.
Long GOP = try switching to another channel and wait until the first I-frame arrive...until then, you are stuck with audio only.
Multiple B-frames and reference frame = same issue as long GOP except waiting for I and P + B frames
QP distance between IPB = this one the worst, who in the right mind to use QP15 for I frame, QP 24 for P frame and QP 35 for B frame? You can see the video quality slowly deteriorating as it plays until the next I-frame refresh.
Certain broadcasters even speed up drama/film broadcast so that more time can be allocated for advertisements.

So true..
Main point.
Its all about maximize profit..