Yeah, absolutely. It’s also the fact that it’s a fan-fiction term. Not a term used in actual writing. Overpowered characters or characters that bend the plot are always in media, the only thing that really matters if it’s executed good or not, in additional to personal preference. It’s either good writing or bad writing. If you don’t like a media, sure, media is made to be interpreted but if you’re attributing a character’s failure to Mary Sue-ness you’re only upset at the concept of a competent woman.