There are more than just good guys and bad guys; in particular, there are also opportunists.
Opportunists are the ones who will sell a 0day to bad guys. Or who will drop a 0day publicly to promote their services. And they’ll fight tooth and nail against any actual legal obligation to engage in responsible and coordinated disclosure, because they make more money without that.
Seems like a classification you just made up to navigate a message board debate: the category that equates commercial vulnerability research for security products and people who sell zero-day vulnerabilities to bad guys.