From my reading of the article (which is hard to parse not being an expert) it seems there is a German YouTuber with Tourette's who also on his YouTube shows displays non-tourette's tics. And these tics are being copied by other young people watching his shows, and being presented as Tourette's until they arrive at the clinic where these experts go "hang on this kid does not have Tourette's but does have tics similar…
There may be a relation to military conditioning. I spent just a single week at a military academy introductory program in high school and when I returned home I was "uncontrollably" (if I thought about it I could avoid doing it, but if I was on autopilot it happened by itself) squaring my corners and calling my family "sir" and "ma'am". The thing was, those patterns were my entire life for that week, and they were v…
(V. S. RAMACHANDRAN)
The author/researcher says he believes that is one of the main mechanisms of human learning (babies look at adults and imitate. Adults look at other adults and imitate. Subconsciously)
What you are describing sounds very similar.