Responses
Let's agree to disagree.q
To me a bad mary sue is a bland one.
Personally, the only time a mary sue will ever be good is when it's done for satire, like teruhasa from the disastrous life of saiki k.
If a mary sue is made and intended to be taken seriously....then it will inevitably and automatically be cringy and boring.
As for marinette.... admittedly, I am quite fond of her, so it is entirely possible my point of view is biased, but I don't count her as a mary sue because she posseses a LOT of flaws- most of which aren't glossed over-

I think I'm boutta get diabetes if this goes on
Like...I'm sorry, but this is too mary sue for me..;;;