While I suppose you could describe cable as streaming it doesn’t really refute the point about the ability to skip adverts
The comment I responded to suggested that it's impossible to record video delivered over the internet, which is obviously insane. Were you thinking of something different?
The comment you replied to was pointing out that it was possible to record from cable TV with DVRs and that they had a feature to detect commercials and either skip recording them or allow you skip them en masse during playback.
It is quite difficult to record video from many services. Harder still to do it in an automated way like a DVR.