Jollyjack Thread -

The thread’s popularity attracted negative attention around (August 2018):

Unlike polished, anime-inspired artists of the same era, Jollyjack’s style felt tactile —as if drawn with a ballpoint pen on notebook paper, then scanned and colored in a hurry. This authenticity became his trademark. jollyjack thread

Alternatively, looking at the word "thread" in a technical sense, maybe in a forum, a thread is a discussion topic. If there's a user named "Jolly Jack" who started a thread, that could be the context. However, without specific info on such a thread, it's hard to provide details. anime-inspired artists of the same era