She's not exactly wrong, but she's being hypocritical and uncharitable. In fairness, it's easy to do - I use to laugh my ass off at girls who like Twilight until Stephanie Meyer wrote a gender-swapped retelling of her own work. I never read it, but the synopsis of it was enough for me to instantly understand the appeal.

Yes, typical male isekai protagonist is a fucking loser, and that's the joke. It's self aware, self-deprecating humour with a hint of 'oh man, I'm a fucking dweeb, but at least I'm not as big a dweeb as this guy getting inexplicably surrounded by beautiful women is!'

...The female isekai protagonist lacks this hey-look-in-the-mirror-loser reflectivity for the viewer. They have to, because women can't handle having their failings highlighted. A female isekai protagonist will never be called a repulsive loser by the attractive male characters.

What I'm saying is that male isekai protags, despite being utterly obnoxious, are still less insufferable than their female equivalents, because at least we're not expected to take them seriously.