I actually don’t like the "magic exist so fuck simulatiounism" reasoning, since it implies that as soon as magic exists, any rational explanations are off the table. I generally prefer to establish what can and can’t be done, so we have as baseline for what’s possible. Otherwise you quickly loose consistency. Martials should be able to do more than regular people in our world, but there should be guidelines on what they can do.
Yes the game is not a simulation. But I prefer using examples aside from magic. Magic is not simplification for game purposes, magic is part of the setting. Things like HP, the turn order and armor class vs. saving throws generally work better as comparisons.