Interestingly, if we are talking about actual, diagnosed, non-colloquial, real-bad-if-it-goes-untreated OCD... Jon Herschfield is a good writer about OCD who has it himself and this article series he wrote mentions some OCD manifestations that involve a deep fear of something happening on the internet https://www.sheppardpratt.org/news-views/story/moral-scrupul...

Here's more info on how people with obsessive compulsive disorder might experience obsessions and compulsions related to matching, symmetry, correctness. https://peaceofmind.com/education/types-of-ocd/perfectionism...