Could somebody tell me what is the "opinionated genes"? I got  picks from  original manuscript as followed:

In the course of their study, they also discovered that in a number of contentious cases one or two "strongly opinionated genes" among all the genes being analyzed appear to be causing the problem because the statistical methods that evolutionary biologists have been using are highly susceptible to their influence.

In some cases, such as the controversies over the origins of flowering plants and modern birds, they determined that the removal of even a single opinionated gene can flip the results of an analysis from one candidate to another …

Thank you！

https://scienmag.com/forget-sponges-the-earliest-animals-were-marine-jellies/