Even ignoring the fact that said menu is interactive in that you can move it to select other options instead of your attack, your own previous statement proves your backtracking and poor attempts to hide it here:
Only specific actions like using items, inventory management, and special attacks such as summons and magic are menu based.
Putting aside the actually correct stuff that does need to be handled in there like inventory management, assigning and activating special attacks which in cases like Ars Arcanum and the other special moves do need to be activated in the pause menu to be able to use them actively in combat using the menu, how in that pause menu do you, as you put it, use items, summons, magic, or indeed using those special attacks directly in combat if that's what you were indeed saying this whole time?
I'll grant you the special attacks needing to be activated in the ability section and items needing to be equipped to slots to use in combat, however magic and summons cannot be touched in there as they're automatically activated as you get them, so if you referenced them at all, you were talking about the command menu, not the pause menu. At absolute best, giving you the greatest possible amount of leniency on this, the only way to even slightly alter how magic is used in that menu is to assign them to shortcuts so you don't muck about with the command menu to get something specific, but even that only applies to magic itself, Summons you can't do shit with so that alone kills your attempt to backtrack there as there's no way to spin doctor that into this tangent, at all. So in your attempt to split hairs to save face, you tried to completely change what you were talking about previously, proving you wrong.
You goofed, happens to the best of us, admit it and move on. Your poor attempts to cover it up only dig the hole deeper.
KH has an active menu that is constantly open and clearly displayed on the screen which you can use directly in combat that allows you to attack with the keyblade, use magic, items, summons, or special attacks depending on what's selected. It's the exact same thing as what you just posted, baring that it's real time meaning there's no point it actually closes, so arguing that tangent is the actual splitting hairs here. You click X, you do the action selected or otherwise go into a sub menu, exactly how that same game works like some kind of, I don't know, menu or something. It's the same thing whether you select attack to whack something with your keyblade or go into the magic menu to cast Fire or Gravity or whatever. If you're not on attack, X does not hit something with the Keyblade, the exact same as in a FF game where if you don't select attack, you don't hit someone with your weapon for your base attack. In real time KH literally performs the selected action on the displayed command menu.
That's how the entire interface was built, and it works just like the standard FF Menu because that's the way it was designed, it's only activated in Real Time rather than the other delay based systems they normally used. And the system could in theory work just fine the same way for this game same way if they decided to go the action route. It's literally a menu, there's no other way of spinning this.
Not helping your case is the fact that this is basically arguing the difference between the FF Pause menu and the battle menu here, which even in that game are two completely separate things, so even if you were arguing the case for that, which I just proved you weren't, the analogue already falls apart because FF already has an analogue for the KH Pause menu, which is its own pause menu where you do the same ability management, inventory management, status and quest check and so on, differing slightly depending on the game. So either way you'd still be wrong.