I like that we are living in a era where you could choose 3 of the big team sports and arguably the best player ever is still active in each.
Messi, LeBron and Ohtani.
Look you can ALWAYS make a quite reasonable argument that the best player in any sport, playing today, is the best player of all time in that sport.
For example- right now the best player in the NFL is, I believe, Patrick Mahomes. Is Patrick Mahomes the greatest player or greatest quarterback of all time? I haven’t really thought about that too much, but I wouldn’t be adverse to it. I think he’s better than Tom Brady who is often considered for that.