I don’t believe the quality is lower at all, it’s just a different game. The quality of defences has improved massively over the last 10 years for instance.
I think many people are mistaking boring to watch for low quality.
If the 2007 Leeds team were to play the 2017 Leeds team all I could see would be 20+ point win for the 2017 version.
That’s not dismissive of 2007 or the past, just an illustration of how the game evolves. Line speed, tackle technique etc have all massively improved and so the time on the ball is hugely reduced.
The challenge for the sport in my opinion is to find a way to make the game better to watch and to open it up as defences are now stifling.