I agree with much of what you said, Nintendo owns Fatal Frame as an IP from Koei Tecmo and it's filled with ghosts, girls in bikini, stories of torture, homicide and rituals, and then the console now has Dark Souls, promoted by Nintendo with an Amiibo and whatnot, and other examples like Bayonetta etc. so I can't see where someone who tries to reason with that are coming from other than not being up to date with the subject.
It's true that there would be more room for tech specs improvement in the game, but it may not be where the game is headed, since Yoshi in this recent interview seemed more interested in other aspects of visual improvement rather than tech specs:
But then again, even if they tried to push forward in the tech specs, they would risk losing the players who yet remain on the PS4 for possibly a long while after the next generation consoles release. And yet again, Yoshi keeps saying that they want the game to be playing through as many platforms as possible, and the Switch has a considerable amount of players I'm guessing SE may want to include in their player base. So from what I see, they would either try to make it playable on every console including the Switch to keep the low, average and the high tech spec hardware players or just abandon the people who could not afford to play FFXIV due to the decision to keep the game for a higher spec hardware player base. From Yoshi's words, that they want to keep it on as many platforms as possible, I understand that Yoshi is more interested in the availability rather than the increase in graphical fidelity.
As for how you feel regarding people who want the game to be on the Switch being people who don't care about the game and just care about the console, I don't agree with it, simply because I myself, may have a different perspective as to what may be beneficial to it in the long run and if Yoshi and his team see that it is the right thing to do due to the business and marketing strategies they wish to make for the sake of the game, even if it means gaining more audience through sacrificing a matter for another, I support. Not everyone is a crazed Nintendo fanatic simply because he/she wants the game on the platform, it may just be that they simply don't agree with you,