Absolutely, and unequivocally the PL is vastly stronger than it was between 2000-2008.
You are maybe looking at Utd, Woolwich, Chelsea, Spurs having meh seasons and forming that opinion, but the reason these huge clubs can no longer have meh seasons and still piss through into the CL is that the rest - from 7-20 are now so much stronger than back then.
How an earth do you think it was even possible for Leicester to win the PL a couple of years back.
There is so much money in the PL that evennthe mid-low table clubs can buy better recruitment analytics, hire better coaches, buy better players, the academies in England are now massively superior to what they were producing 15 years ago.
15 years ago Kane would have been taken off us by ManU after one or two decent seasons, just to asset strip a competitor - the uber clubs are finding this much harder to do to their rivals now, because we all have so much money we can resist more often.
The quality of coaching, tactical, philosophical, nutritional, physical conditioning, sports science. All quantum improvement on 15-20 years.
This season the top end of the PL might not be showcasing that coaching/philosophy to the max with people like Lampard, Solskjaer, Mourinho but survival and evolution will soon correct any imbalances, football is not a long term game.