When you keep speaking wrong*, it indicates that you have no regard for being understood, and hence you don’t give a rat’s ass about a) your listeners and b) your language. Meaning you’re an insufferable twat.
A total of zero people are confused when someone says “supposably” instead of “supposedly.” All you think about is how you or someone else you know was corrected and made fun for speaking “wrong.”
Also, “correcting” peoples pronunciations has a deep-rooted history in oppressing minority groups, e.g. “ask” vs. “axe.” You’d know this if you weren’t full of so much hate and ignorance.
Them- “btw, you’ve pronounced that word incorrectly.”
You- “THAT’S RACIST. You are full of hate and ignorance!”
You’re not an English teacher, right? You’re not speaking to your kids, right? You’re just having regular conversations with people, right? If you want to beat rules into people who don’t speak like you do, you might actually be full of hate and ignorance and you’re probably racist, that is 100% correct.