People who make an issue out of meaningless technicalities.

Using literally vs figuratively. Frankenstein vs Frankensteins Monster. Irregardless and ain’t not being a word. Could care less vs couldn’t care less. We all know what people mean and some of these are even just recognized as things now.

https://www.merriam-webster.com/dictionary/irregardless

https://www.merriam-webster.com/dictionary/ain%27t

https://www.merriam-webster.com/dictionary/could%2Fcouldn%27t%20care%20less

https://dictionary.cambridge.org/us/dictionary/english/could-care-less