The concept of plagiarism by mistake doesn't really make any sense to me. I don't believe that a person can really forget to mention the source from where he just literally copied and pasted something into his post/comment unless they don't care, or aren't aware of the fact that plagiarism is treated as a crime in here and is dealt with a harsh punishment.
When the "mistake" or "didn't know it's bad" argument is brought up I'm trying to imagine the user shoplifting and then trying to explain to the cops that it was a mistake or that they didn't know it's not cool to walk out of the store without paying.
So yeah, it doesn't happen accidentally. And it's not like in the store we see signs "don't go out without paying".
Then ask your friends if you have a lot of them.
Did not happen to them that they bought a lot of goods in the store, while unconsciously forgot to pay for the chewing gum, which was put in the pocket, when it was necessary to use two hands to get some goods.
If that happened, do you think they're thieves?
Now they can't go shopping, right?
Probably you will even stop communicating with such people, right?
In fact, they just go back to the store and pay for it and the problem will be exhausted, the forum does not have this capability.
You can deceive thousands of people and you just lose trust (as it was with Atriz) but you can continue to conduct their dark deeds...
Is that justice?
I think it's hypocrisy.
You like to compare things that can't be compared.
For you, even a person who unknowingly made one mistake is a criminal without the right to rehabilitation...
ps:
I can write the same thing about many favorite comparison with institutes.
Yes, you can make a diploma using someone else's work and you will be expelled, or you will forget to indicate 1 source in the list of used literature when writing a diploma project, for which you will not be expelled.
You have to understand the difference in these things.
There is a huge difference in when a person does it once and most likely unconsciously and when a person does it on purpose.
I didn't notice you putting emphasis on that.
I think that 1 temporary ban is enough for a person to understand that he made a mistake and should be more careful than to be sentenced for life without the right to appeal.
But this will only work if you're really fighting plagiarism, not trying to bury users...