Oh, wait, that's what this was about? Er. Well, to clarify, obviously - just like, uh, every other debate in the RPGDL - "absolutely" was a random adjective I threw in without all that much thinking and only means "absolutely in my not-so-humble opinion which others are under no obligation to share." To my knowledge nobody tries to boss around how others vote, but plenty try to convince others. Which is the point. Yeesh, I hope that nobody assumes that to be true, ever.
Anyway, back to the debate. Well, you can justify a lot by argument A, that "Game X's enemies fail, so you can get away with this strategy." Sure, there are various cute completionist advantages you can get by not using HP+ materia, but you're still handicapping yourself overall; faster limit gain isn't as good as "can't really die." I did replay FF7 without HP+ or MP+ materia, and Disc 2 and 3 were considerably more difficult, since enemy damage suddenly didn't as fail as hard. This is salutary for game balance and enjoyment, but, well, still not a "standard" playthrough in my book.