These "forced conditions" were not only the image thingy. It was also the "songs" "fights" thingies.
There's nothing wrong if a musical has a lot of songs - thillAnA mOganAmbAL or sindhu bhairavi or mudhal mariyAdhai.
OTOH, it was ridiculous to push in a lot of kanavu scenes and unnatural situations to have songs in every movie. This should disqualify a lot of 60's movies, as compared to avaL appadiththAn and such ones, for e.g.
Songs that are in the background, moving the stories are ok - and so are the occasional festival kind of ones or thAlAttus.
OTOH, the mindless duets, kanavu scenes etc that are totally unnatural to TN life disqualify such movies from being considered as neat cinema :-(
(And this is coming from a person who spent countless hours listening to TFM - pure objectivity, I say!)