What I am quibbling about is the is the indiscriminate use of the word diversity, a current buzzword in many fields used when trying to convince people . It sounds good and obfuscates discussion unless it is narrowly defined each use and adhered to. The crossover of phenotype/genotype positions. An isolated population is not diverse genetically, but the expressed phenotype may be unique in contrast to the whole universal population. As you should know from your bio studies, isolated populations tend to lose adaptability as they become more specialized. What it appears is that you and the other fellow want is preservation without contamination of unique phenotypes, fine I do as well; hence the existence of seed banks. However, rather than take your own measures you wish to stop others so you don't have to take any measures.