There are contexts in which I’d want to use the terms as you do, but I think it is often reasonable to associate “conservatism” with being more hesitant to depart from conventional wisdom, the status quo, etc. In general, I have always been sympathetic to the idea that the burden of proof/argumentation is on those who are trying to raise the priority of some particular issue or problem. I think there are good reasons to think this works better (and is more realistic and conducive to clear communication) than putting the burden of proof on people to ignore some novel issue / continue what they were doing.
There are contexts in which I’d want to use the terms as you do, but I think it is often reasonable to associate “conservatism” with being more hesitant to depart from conventional wisdom, the status quo, etc. In general, I have always been sympathetic to the idea that the burden of proof/argumentation is on those who are trying to raise the priority of some particular issue or problem. I think there are good reasons to think this works better (and is more realistic and conducive to clear communication) than putting the burden of proof on people to ignore some novel issue / continue what they were doing.