Seventies TV programmes on Talking Pictures

I have been watching the programmes from my teenage years and early twenties on Talking Pictures

What strikes me is how much more enjoyable they are.  Not a lot of loud music, the action is more sedate and the whole pace makes the stories a lot easier to take in.  Budgie, Public Eye, and the Mind of Mr JG Reeder have been on for the last few weeks, all accompanied by a warning about seventies language and attitudes which I can' fathom what they mean and to me it seems mostly inoffensive. 

These programmes are not based on outrageous plots, nor about murders every five minutes and are just fine drama entertainment.  I just wonder where television really lost the plot and in the main started to appeal to the lowest common denominator.  Or perhaps it always has and the rose tinted glasses are out, these programmes being quite a rarity amongst all the dross that was always on. (I can remember lots of programmes that were rubbish from that era!)