There is an observed situation in evolutionary ecology which the response to Lennart rather reminds me of: the case of the overwhelming singular adaptive advant

There is an observed situation in evolutionary ecology which the response to Lennart rather reminds me of: the case of the overwhelming singular adaptive advantage. An ecological situation arises which gives one subspecies a huge, but temporary, advantage. So huge that all the other subspecies are competed to extinction. But that advantage was an advantage in only one aspect of survival and now there's a monoculture (which we all know is more fragile against future threats). If there's a latent, (or perhaps overt?), Lennart-phobia, it's that he possesses that one temporary huge advantage which will lead us to a monoculture? ...or not, this is just a curious analogy [shrug]