Wrong!
If dozens of people tell you you’re doing it wrong, then it’s time to take a critical look at your actions, instead of just accusing everybody else of doing it wrong.
Not being able to process criticism without immediately getting defensive will make your life more difficult than it needs to be.
Then again, it is a skill that some people simply do not have. You might be literally unable to “defeat the ego” and have absolutely no doubt about your actions, even after so many people gave you feedback, people like that exist.





“Good thing there weren’t dozens.” You will NOT realize that you are engaging in the very pedantry you judged just one comment ago, will you?
“this many days” If 1 is many to you, you have to realize that you got so, so many criticisms for your communication.
“I processed the criticism and determined that I’m okay with the idea that some people can’t figure out […]” In meme format, “No, it must be the children who are wrong”. There’s nothing inconsequential about multiple people giving you the very same feedback.
“Nothing of value is on the line here” - like I said, it’s about your future (communication is also important in social life, love life, career, etc), so I wouldn’t say nothing. If you like to make these challenges, people have even given you some valuable feedback how to fix the bugs, but if you decide not to, meh; there’s enough content on the internet.
I was not insulting your ego, but the part about living in with narcissist fits. Because then you’re used to everything slightly negative being an attack that you have to defend yourself against, where you can’t lose even an inch of ground. And by protecting everything that is part of yourself like that, you deny yourself improvement. Because improvement is by definition change. If you are unwilling to change, it means you are unwilling to improve, and that is your personal decision alone to make.
Take this and improve yourself with it, or not - but let me be clear that a further defense is not gonna add any value. It’s like with a poster, or a joke; even if you explained it well somewhere else, it doesn’t make the original thing better.