What a useless mod! It's like modding Wii Sports so it can be played on a GameCube controller by couch potatos. It's a 3D, dual screen game meant for unique hardware. This just turns a great game and a unique experience into a run-of-the-mill Zelda hack.
I'm not primarily here to join the dogpile, I'm here to grind an even older axe.
You're comparing apples to oranges. Modding Wii Sports to use a different controller as you say changes the gameplay experience. This mod changes the visual experience (also the buttons but you're talking about the visual part). I think gameplay mods are inherently more valuable/worthy than visual mods.
Admittedly, it is hard to understand what merits the "unique experience" of having the UI on the bottom screen instead of the top screen. You're defending a rerelease against a QoL mod. Your argument is a lot more applicable to say,
modding skyward sword for a gamecube controller particularly because (oh look, me) it would require diminishing the gameplay.
My actual tirade today is the ridiculous unnecessary waste that OoT 3D existing in the first place is. I watched the video so I could see the stupid flowers sticking up on Hyrule Field during the title screen. The garish added gold really detracts from settings I remember well from the N64 original. It's like they forgot that the bright colors of Majora's Mask were intended to convey horror, which is what I feel seeing borderline neon shit in Ocarina of Time.
I remember this mistake as the start of Nintendo's enormous waste of development resources (even third party resources) in remaking their best games for rerelease. The correct mode for this - I'm not saying rereleases are bad - is slap an emulator on it and make minimal changes, like the Gamecube's Master Quest release of Ocarina of Time. Same graphic resources, bare basic UI changes to match the Gamecube controller, and new goddamn gameplay content in Master Quest. Probably less development resources made Master Quest than made OoT 3D.
I'm not saying Nintendo is what it used to be, but imagine what their money and resources could been used to make in the absence of Past Better Zelda Game HD/3D 3, of which we've had at least a half dozen now. These games are the 'Disney live action remakes' of video games. Just tragic.