The post you are replying to agrees with the common, old definition. The issue is that some people try and use their own definition, whether outright saying the common definition should be changed, or more subtly acting like their more exclusive definition is just the way things are. This is a problem in the cases people try to use some other definition to push an agenda or otherwise look like they are winning an argument. But all it does is turn things into a semantics argument which doesn't accomplish anything.
The post you are replying to agrees with the common, old definition. The issue is that some people try and use their own definition, whether outright saying the common definition should be changed, or more subtly acting like their more exclusive definition is just the way things are. This is a problem in the cases people try to use some other definition to push an agenda or otherwise look like they are winning an argument. But all it does is turn things into a semantics argument which doesn't accomplish anything.