Well this is actually a very large part of the rain world version of my oc EA. You see EA is very very against the idea of genetic modification, they consider any instance of it as a direct act of malice against them (sorry EA im a little tired less pronouns today) personally. This is for a couple reasons, number one being their jerk former work partner and also former best friend (one wonders how such a creep managed that..) seven golden glories used to love bioengineering despite her pleas for him to stop, and while dying released a lot of modified creatures to try and kill her too, some of his weird followers would also try that from time to time, and EA is very fascinated by the idea of unmodified evolution and how everything slowly changes over time, trying to make their regions as free from genetically engineered creatures as possible to not spoil the purity of the experiment, leading to any modified creature that does enter potentially influencing and totally ruining said experiment