This is correct. The reason there aren't young players in the mould of Messi or Ronaldo coming through who routinely dribble past multiple defenders a game is because the quality of player is better on average, it makes it less fun to watch because players are generally faster, fitter and more disciplined from a diet and lifestyle perspective - it's all a bit more even - and then you have the big improvements in goalkeeping as well. Most teams can press now, all teams know how to sit in and counter effectively and it's why the role of the coach is becoming more and more important. Coaches with highly specialised or rigid tactical ideas have become the quickest and easiest way to improve a team - Ranieri, Conte, Pep, Klopp - all have completely different styles but they got their teams to function well above their collective level in the PL.
Think of the difference in defenders from when Ronaldo arrived at United, to if we signed him now - almost every full back is rapid, fit as a butchers dog and relatively technical. We've gone from G Nev to AWB for example.
While I think much of this is true I disagree with the part regarding the talent of the youngsters. There is nobody around currently who ranks where Messi or to a lesser degree Neymar and Cristiano used to be on the talent scale. Yes, it's harder to dribble past organized defenses nowadays, but it's still possible as those very players prove week in week out. And while Messi and Neymar are obviously better players now than they were when they entered the scene, their dribbling hasn't really changed or in Messi's case even degressed a bit.
There have been many praised youngsters in recent years, most notably Mbappe and the current flavor of the month is Haaland. But also Sancho, Felix, Dembele or Havertz. Sancho at times gives me Neymar vibes and Joao Felix has outrageous technique but so far they're still a tier below what Neymar offered at the same age. Regarding the rest of the bunch it was clear to me from the very beginning that they don't possess the same brillance as previous generations of prodigies. Still impressive but simply no gebiuses on the ball to the extent of Messi, Neymar, Cristiano or even Hazard.
The first point is almost maddening. I'm still young but the world has completely changed, as a kid I was a nerd but was still easily spending 40 hours a week playing sports with most of it being in the street. I remember that we would even sprint on tracks just for fun. Now when I go to the same places, I see no one or after work hours people that are in their late 20s-early 30s. Where are the kids?
This is a very, very good point. Football has become more collective and tactical since around 2008 and simultaneously less individualistic. There are less players who learned the basics "on the streets" but more who made their first steps in a coached environment.
The DFB for example has just announced a huge rebuild of youth football. It shall be less focused on team success and tactical aspects and more focused on individuals and their qualities.
And I think that's the case for many organizations. Although it seems as if guys like Pep and Klopp have been around for ages, it's still relatively new that such holistic systems like their's are being applied, and many clubs and associations seem to have made the (understandable) mistake in focusing on this trend and teaching systems to youth players.
However, even the best system is worthless if it isn't played by good players and the teenage years are the most crucial ones for the development of technique etc. Also, even the best coaches allow their attacking players some degree of freedom since attacks are always improvised to some extent.
I think in this context it's also worth pointing out that the best individuals in the sports' history weren't produced by the industry nations but often by rather poor countries like Brazil or Argentina. For all the professionalism in Germany's or England's or even Barcelona's youth academies, it is clear that the improvised and less regulated and professional environment of South America is better at producing footballers with genius level talent.