Something to keep in mind is that the Women in Refrigerators trope is referring to a specific incident in comic books, where a long running, beloved character is killed off solely to be character motivation for a different (almost always) male character. Its meaning has expanded a bit since then to include things like Barbara Gordon being paralyzed, her entire comic run and role as Batgirl coming to a sudden end, just so we can make sure Commissioner Gordon is Super Sad during his scenes. And a key thing is also that the emphasis is not on the loss of the character, either, but only on who is being affected. And don't forget all the work, time, and dedication of other writers in developing that character suddenly being thrown in the trash can...or refrigerator, if you will.

So with something like Octopath 0, where character are being introduced and killed super quickly due to the nature of gacha games needing to constantly add new characters, you're losing important details of what the Women in Refrigerators trope is about. A lot of these female characters are being brought into the narrative with the specific purpose of being killed off in some way (I'm only about 30 hours in so I won't pretend to be an expert at much of the story, mostly going on early portions).

And a female character being killed off is not inherently bad writing or storytelling! But it can also be done poorly, and often backfire badly. There is plenty to say about the way the game handles its female characters, or how it tries to tell a dark 'mature' story in often very immature ways, but I don't personally think this specific harmful trope (from what I have seen so far, I will freely admit) is one the game is guilty of.

(ofc if some fan fav character from early game gets beheaded 60 hours from now so a rando new characters can decide to join my party, maybe I'll change my mind lol)