Species eradication continued to occur after the Warp ERA but we can only surmise it was an order of neccesary expediance.  Andorians were telepaths, apparently but in a comical genius way.  Meanwhile, the Gorn are predatory.  Predation is a totally different problem.  I’m sure the Vulcans were involved…in proxy like presumption.  Meaning the non-vulcan vulcans.  Romulans.