Earlier quoted context omitted.
For sure, a very good question. It's definitely a rabbit-hole that doesn't feel very productive to go down beyond, "here be dragons".
Your argument just boils down to "I think not". Saying Magnus Carlsen doesnt have one of the best minds of this generation because he is "just" a chess player is like saying Erling Haaland is not one of the best athletes because he plays "soccer" not football. If being the indisputable number 1 player for almost a decade and being in the conversation for being the GOAT of one of the oldest, most studied, more competi…
From the man himself:
"I’m not saying that I am totally stupid. But my success mainly has to do with the fact that I had the opportunity to learn more, more quickly. It has become easier to get hold of information. The players from the Soviet Union used to be at a huge advantage; in Moscow they had access to vast archives, with countless games carefully recorded on index cards. Nowadays anyone can buy this data on DVD for 150 euros; one disk holds 4.5 million games. There are also more books than there used to be. And then of course I started working with a computer earlier than Vladimir Kramnik or Viswanathan Anand."
Another quote from that same interview:
"Carlsen: I’m not a genius."
Some sources:
https://www.chess.com/news/view/-misconceptions-about-chess-players
https://www.wsj.com/articles/does-chess-make-you-smarter-1479403551
https://www.acsh.org/news/2017/05/31/do-chess-players-have-higher-iqs-11366
https://en.chessbase.com/post/magnus-carlsen-on-his-che-career
https://www.chess.com/blog/RoaringPawn/magnus-carlsen-a-genius-or-automaton
https://gardinerchess.com.au/fm-stojic-is-magnus-carlsen-a-genius/