There is such a thing as linguistic prescription, but there isn't really such a thing as "prescriptive linguistics". There are linguists, who study and describe

There is such a thing as linguistic prescription, but there isn't really such a thing as "prescriptive linguistics". There are linguists, who study and describe language, and then there are people who promulgate their opinions about language. Opinion promulgators are not "prescriptive linguists" and what they practice is not "prescriptive linguistics".