If anything it is the opposite, IQ measure whatever it measures, the problems is that some people don't want to accept the correlation to other things, for exam

If anything it is the opposite, IQ measure whatever it measures, the problems is that some people don't want to accept the correlation to other things, for example to the rate of success in academic studies. So you can ignore those correlations as much as you want and put millions into educating people with low IQ but it doesn't and won't help. You try to shame people for looking at the clear data and coming to conclusions while coming to the exact same conclusions and wrapping it with different semantics. Yes there are also other parameters in life, nobody denies it but IQ is pretty good indication for certain things.