As a fellow translator, I wouldn’t mind if someone fixed things if I made a mistake. You’re just turning this into a bigger issue when Noa literally just made the experience more pleasant for older readers who don’t like or understand slang
What I will call out though is not asking for your permission, that was shitty. But honestly, with people already saying the lines were unserious, you probably wouldn’t have changed it anyway
Also, talking about stealing when you’re translating someone else’s work and promoting your page to get money from it is a bit ironic. If you’re not financially stable enough to buy chapters and need other people to fund it, then maybe just don’t do it and leave it to someone else
And instead of calming the situation when people are calling each other names and straight up insulting others, you just double down
At the end of the day, this is a pirate website. Everyone here is technically stealing, so this really doesn’t have to be that serious

Stealing another translators chapter that they paid for, cause apparently their translation ruined the 'immersion' of the story. Be serious, right now. If you had such a problem, buy the chapter yourself and translate it.