people who think they are schooling fat guys by saying "calories in calories out"

[Altruist]

are 50 iq

how many people in the world are fat because they ... don't know they should eat less/better food and/or burn more calories? pretty sure the number is smaller than 1%

and how many are fat because they are struggling with controlling their appetite, meaning their problem is at least partially mental/psychological? everyone else

won't even address the wisdom from the title being pretty wrong and way oversimplified