https://en.wikipedia.org/wiki/Irregardless

Or one that absolutely drives me nuts:

"A great rate of speed"

Which is a journalist way to say "I failed high school physics, but I'm still going to try to sound smart".

https://en.wiktionary.org/wiki/past_exonerative

In which journalists use the passive voice to excuse, e.g., police shootings. "The victim was shot and killed in an officer-involved shooting." Rather than: "the officer shot and killed the victim."

https://www.washingtonpost.com/news/the-watch/wp/2014/07/14/...

https://www.nytimes.com/2007/03/14/washington/14mistakes.htm...

really threw me off when learning French. I went from the mostly benign and spelling-only prescriptivism of Spanish to the complete and utter anarchy that is English to this weird situation French is in where it's the worst of both worlds: it has all of the rules and all of the exceptions.

In some situations following all of the rules ('course a pied' over 'running' type stuff) will make you positively odd, and in others ignoring some specific rules makes you sound uncultured.

I dislike "Au jour d'aujourd'hui" because of the redundancy. There are shorter and more elegant ways to say the exact same thing. I don't know if we can talk about prescriptivism in that case. It just gives a negative impression on the author (like when you see an anti-pattern in computer code).