The problem is if you gut LFR even more than it is now (which is already bad as mythic 0s are more lucrative) you'll get even higher queue-timers which will make it worse for the people who actually do them. I don't do LFR myself and haven't done since Legion (and then it was only sometimes for the quest) so I'm not impacted, but if someone genuinely enjoys LFR and its their main activity I don't think they need to get screwed with even longer timers though.
As for 'doing it to watch and learn' it doesn't feel very applicable as half the mechanics are removed in LFR and the ones that are there are not punishing enough to where people will learn them.. unfortunately.