Due to the 150-200 year decline in general intelligence, there are not many potential geniuses born nowadays (not many in total, and only as in a tiny percentage of births) - furthermore, six to eight generations of accumulated deleterious genetic mutations (due to extremely low infant and child mortality rates) mean that almost-all modern geniuses will be oddballs: difficult personalities, significantly crazy, stubborn, aggressive, disobedient; socially maladaptive due to lacking in careerism, networking-abilities and constantly 'saying - or doing - the wrong thing'.
This seems to be the case from the geniuses and near-geniuses I have known - hardly any of them are/ were good at building their careers or nurturing their success - quite the reverse: either they are utterly obscure and apparently happy to stay that way, or else they are always 'trailing their coats', picking fights and making powerful and influential enemies.
This is another factor in the apparent disappearance of genius - intolerance of eccentricity, and the dominant tendency to write-off as insignificant and incompetent (or even dangerous) those who do not tick all the right boxes - many such people drop out from education early, or fail to get good jobs/ promotions/ publication/ prizes - and consequently have near zero influence.
In such an environment, actual achievement means nothing. Literally nothing.