Because a few teachers are instagram influences doesn't mean that "Teachers" as a profession are doing this widely. You could pretty much replace the word teachers with any profession and this would probably hold true.
I'm glad people are finally catching on to this fashionable narrative-generation tactic. When a reporter writes "X people are doing Y", all that means is that at least two X people each did Y at least one time. That's it. It doesn't mean Y is common or ascendant among X or the typical X does Y or even that any X is at the present moment continuing to do Y. This kind of headline sure sounds like a broader claim though!
Reporters and editors are people with a knack for language. They understand that for this phrase, the gap between denotation and connotation is a chasm. That we see this particular phrasing constantly anyway suggests a certain malfeasance.
I'm really tired of having to read my news adversarially.
