Is anyone kind of doubtful on Final Fantasy XV being a radically different genre than the other games in the series?

Sure, FFXI and XIV were MMORPGs, but they were still command based RPGs. I personally don't believe games of a different genre than their predecessors should be counted in the mainstream games.

I have nothing against Square making an action based game like this rather than an RPG, don't get me wrong there. I mean, I really enjoyed Dissidia Final Fantasy which was a fighter. Though I really think games that are of different genres than their predecessors should be spinoffs, rather than mainstream titles.