There is some truth to OP. The average basketball player from America is obviously miles ahead of the average baller from the rest of the world. But there are obviously multiple elite international players and quite a few a tier below who either been in all star game or will be.Every decade this same subject is brought up
Back then you had Dirk who was elite and then Pau, Marc, Tony, Manu, Stojakovic who were not as dominant as Luka, Jokic, Giannis, etc.
You've watched NBA for a long time. Remember how many trash European players got drafted in the 00s. All these mediocre teams gambling on tall Euro dudes like Darko, Bargnani, Jan Vesely, Tskitishvili, picking them with high picks and hoping for the next Dirk/Pau success.
Nowadays, even outside of MVP candidates, the list is deeper than ever. There are still names like Sabonis, Lauri, Siakam, then young players with huge potential like Franz Wagner or Sengun. Victor looks like one of the biggest potentials we ever seen, though gotta see him in NBA first. Also a lot of great Canadian players where 15 years ago you pretty much had no one outside of Nash from Canada.