Questions about Perseus and Medusa

So, I was watching a video on YouTube by a Brazilian YouTuber called "Carolina packer" and she made a video about the story of the jellyfish.

And well, she talks about evolution, interpretations, etc. But there were some points I would like to know

In this case, she says that Perseus petrified an entire island in the texts of the poet Pindar

That he murdered 200 guests at a wedding, in Ovid, killing a lot of innocent people. And she recently said it was out of pure ego.

And well, Athena in Pseudo Apollodorus' version turned Medusa into a monster out of punishment/revenge for being too beautiful.

And she kind of implies that even in ancient Greek myths Medusa could be interpreted as a beautiful woman

In this case, I found the video very interesting and very good, especially on the historical issue of evolution. But it was this mythological part that I was curious about. I don't doubt it and I don't want to insinuate that she's lying, since this is even consistent with Greek heroes, but I just wanted to confirm that. And in the video, unfortunately, there is no link to the sources directly.

If anyone can answer me I would really appreciate it 😅

And if anyone is interested:https://youtu.be/zlrkjpA7o5s?si=2N7XtIst64VQ9Uhb

I apologize profusely if I distorted anything she said. And well, it's an issue that generates a lot of controversy.