This echoes what I tell people: Avoid jargon as much as possible precisely because it excludes people. Sometimes I rant about it, see Jargon doesn’t make you look smarter.
In technology it is all about the commercial case: companies who overdo the jargon lose sales to companies who can articulate ideas in plain English.
And often, the numbskulls who insist on jargon are the ones who are talking with forked tongues. It’s just the same with politics. Plain English is radical.