I've noticed this phenomenon in language which I've come to think of as "the opposite of jargon", but which I'm hoping there's a better name for. I don't know anything about linguistics, hence I'm posting this here.
The phenomenon occurs when complex ideas and belief systems are successfully compressed to very short phrases such that the listener seems to instantly grasp the idea without further explanation, often allowing for the stealthy spread of a philosophy or ideology.
First example: The school principal circulates an email to all teachers urging the staff to a meeting on "Best practices for working with students with disabilities." I, a teacher, have never heard the phrase "best practices" before, but its meaning is self-explanatory: I'm going to learn the best possible way to do my job. Further, this implies that there is one, singular best way to do this job. If I know another way to do this, it is probably inferior, since there can only be one 'best.' When I use this phrase with my colleagues, I spread this notion of a single ideal execution of a job.
Second example: My friend Jane tells me she must be careful in certain situations to use "politically correct" language. I've never heard the phrase 'politically correct' before, but the meaning is plain: Some statements are correct while others are not. This correctness is in some way to do with 'politics'. The stealthy inference here is that some person or persons has written down a list of acceptable words and ideas, and is enforcing it. We are censored, oppressed. When I use this phrase with others, I spread this sense of victimhood.
So where jargon tends to be used to divide an in-group from the general population these phrases have the opposite effect welcoming the listener in to a group of believers. This, I believe, even when they might have otherwise objected.
So what is this called? I'd welcome suggestions for reading on this topic.