I am not really sure why only younger is the focus. Someone already said it, but Tiger was competing against guys older than them. That is what happens with generational talents. Looks at a young JS, he was competing with people older than him. What sets Tiger apart is he can dominate for extended periods. Lots of people have dominated a 1-2 year span, very few have done it for 3+ years. Scottie still isn't at 3+ years.
Where I agree is there seems to be no Tiger Woods in the younger golfer pool, whish is expected.