I had never seen the word "shibboleth" before reading the article about "The Real Class War" this week, and now I'm seeing it in the title of a submission days

I had never seen the word "shibboleth" before reading the article about "The Real Class War" this week, and now I'm seeing it in the title of a submission days later. It's not spiking in google trends[1], but I wonder if the usage of this word spiking in this community? Or did this twitter user read that article? Or is it just coincidence? [1] https://trends.google.com/trends/explore?date=today%201-m&q=shibboleth https://trends.google.com/trends/explore?date=today%201-m&q=...