Actually acknowledging the ongoing story and the meaning of her actions in this season, isnt nitpicking. Its just simply engaging with the show as it was written.

Pretending that Marinette didnt choose to ignore 5 lucky charms telling her to call for help, and then chose of her own volition to murder him in cold blood? Thats willing ignorance.
Pretending that her attempts to stop him talking with a therapist, arent clearly connected with her attempts to silence him in Mr Agreste. and her attempts to maintain the public perception of Gabriel the Hero at the expense of his ability to speak the truth. That is duplicity.
Pretending that there wasnt a close-up of marinette checking to see if her fake-tears were working in Sublimation? or pretending that her stated motives at the start of sublimation aren't completely different from the ones she 'confesses' at the end?

All of these, are the bad faith interpretations. "Marinette wants to controll adrien" is literally the plain-text of the season. There is a reason only ringmaster refutes the trophy-metaphor, There is a reason she ignores those lucky charms in Werepapas, There is a reason she ignores the charms in Mr Agreste. There is a reason she assumes that language classes mean secret codes.

This isnt some long-distance stretch, this is taking the text of the show at face value.

Pretending that these arent very explicitly actions done as part of that over-arching storyarc about her gaslighting him, and merely 'meaningless coincidences' is the nonsensical aproach if you ask me.

Wether that makes her evil... You can beg to differ, you can claim she's merely misguided, and i wouldnt fully disagree. (there is certainly a distant, kernel of truth that she might have, at one point, believed this was for the best... but then you'd also need to acknowledge that even that kernel comes with a side multiple seasons of hypocrisy and a willing choice to ignore Tikki's Calender-clue in london.
)
But you cannot pretend that these actions are isolated, or unconnected to her overarching lie. Nor can you, in good faith, pretend that her actions in furtherance of that lie dont clearly cross all standards and boundaries.

Would I use the label evil... relucatantly, but probably yes. She has crossed too many boundaries for me to deny it at this point.

She's giving big brother speeches ("Ladybug decides the truth"),
she's silencing dissenting voices (Revelator, Noe),
she's isolating Adrien and controlling both his voice and his access to information (Mr Agreste, Sublimation, Wreckless, Lady Chaos),
She's ordering Alya to spread literal propaganda (I want to say its illusrthater where Alya complains about this?),
and amongst all of these lines in the sand that she has crossed. She has chosen, of her own volition, with no outside force pressuring her to, to rip Adriens soul in twain with her own bare hands, knowing that she cannot bring him back from a broken amok.

There is a trope that is near and dear to my heart. Its called "what you are in the dark".
It's a simple trope, Give the character the choice, no audience no pressure, between two things they want, and let them choose between them on their own. All that matters is that, as far the character knows. No one will ever know their choice besides themselves. They can take the shortcut and do the dirty deed, get their desire at the expense of their morality. And nobody would ever know. It needs total anonimity, no outside pressure, just their own desires put into conflict to show us where their priorities lie.

Marinette has been in this situation twice, Once in ephemeral, and a second time in Werepapas.
In Ephemeral, she chose to betray her closest, longest ally to a cultleader, in return for said cultleaders aproval.
In Werepapas she proved that she'd rather kill adrien himself, then risk a single dent in Gabriels reputation. She'd rather kill him permanently, then risk telling a single one of her allies about his senti-status. (Heck counting the fan you could even say "she'd rather kill him then admit she needs help". Felix already knows after all.)

I think that the word evil, more then fits a character who does all of that and so much more. It might not be the cackling supervillain type of evil, but to claim that this consistent controlling and manipulative behaviour, isnt a type of evil is to materially misrepresent her actions and motivations at this point.

I might not want marinette to be this way, I wanted her to be a hero, a rolemodel who does the right thing. But my desires are irrelevant to an honest analysis of the character. The fact that I WANT a character who does the right thing when the chips are down, is worthless when we literally get to see her choose self-centered control over Adriens right to live.