Wow. Alcaraz overrated. When literally everyone is singing his praises, already has 2 GS at the ripe old age of 20, multiple wins this year, etc. "Needed 5 sets to beat Djokovic at Wimbledon' - is that supposed to be a negative? The last Wimbledon final Fed was in, Joker beat him in 5 sets. Geez, Fed was way past him prime, ergo, Joker is overrated. C'mon, man, I like the discussion but you've veered off into 'WTF is he talking about' territory. Who else has beaten NJ at Wimbledon? Lately, not many. How many times has Joker lost a 5th set in the last 10 years? Again, not many? Grass isn't even Alcaraz' best surface but still beat the GOAT in a 5th set and you think that's a strike against him? Wow.
I agree with your assessment of many (not Alcaraz) of the younger players who seem to have the game to be top 10 but not really be The Man. It wouldn't surprise me if Alcaraz (or another player or two) dominates for the next 10 years. Or, at least a very small subset of the top 15 ATP tour winning most/all of the GS events. Don't think Kyrigios, Tsisipas, Ruud, Medvedev, et al have the skill, mentality, ability to adapt styles to opponent, etc. to be dominant. I do think CA has the ingredients, just has to prove he's willing to do the work for many years in a row.