WARNING: Blatant, unmarked spoilers for Chapter 5 ahead.
First of all, that's not really a fair argument since someone who misses the last scene would not know Medb is Finnabair's mother. To them, she dies and the the story ends without any wrap-up. There's no reason to assume things would be different if only Medb thought the MC was hotter.
But more importantly, why should I give a shit what Medb's mother thinks of the MC just because she's Finnabair's mother? Sure, he can be disinvited to her funeral but the MC should still want to grieve on his own and he doesn't need anyone's permission to do that. Indeed, an MC who liked Finnabair but disliked Medb should be that much more invested in grieving on his own since he is suffering not only the loss of a friend but also the injustice of Medb's intolerance.
Imagine if Jessica had died a sudden death at the end of the chapter; would you accept it when the MC just shrugs his shoulders
unless you chose the nearly all the calmest possible reaction to his parents' idiocy up to that point? They are her parents after all, and the MC is just (by your own choices!) her estranged brother. If Templar simps get a touching sendoff and MCs who take those buffoons to task get a "To be continued" screen, would that really make for a satisfying chapter?
I don't think so, yet that's what you're advocating for.
I don't think that can be the case since fucking Finnabair isn't a factor in getting the invitation. You will lose a Medb point if you don't flirt with Finnabair right from the start, but you can afford to miss that point (though you have precious little wiggle room), and you can still turn Finnabair down when the time comes without consequence.
Also, am I the only one who finds it a little squicky that Medb finds it hot if you flirt with her daughter? I am? Right, never mind then.
Why does everyone think I want the MC to barge into a funeral? I've said specifically again that is not the case! This isn't about the MC's legal rights, it's about narrative closure! A character I care about dies, and the narrative simply ends with absolutely no acknowledgement of how big a deal this is... unless I racked up a bunch of points with a different character. That's just frustrating! For crying out loud, even Obi-Wan Kenobi got a few seconds for Luke to mourn him in
Star Wars, and that guy was *the* quintessential doomed mentor! How can it be so confusing that I want the equivalent of that scene for Finnabair?!
But whatever, let's look at the scenario you laid out. I don't know where you are from, but in the stories I've seen, the parents barring me from my friend's funeral over my race/religion/nationality/etc would normally be seen as a failure of
the parents, not myself. So I do find it a little strange that everyone seems eager to jump to their defense here.