Comfort, or lack thereof, with the basic idea aside (which is entirely subjective, so nothing wrong with that), I do think it *could* be a bit creepy but doesn't necessarily *have* to be. (As an aside, a TK version is of course going to be powered by a mana crystal rather than a battery, and we've seen that a normal-sized mana crystal isn't destructive even when shattered, so that particular worry probably doesn't apply here.) The idea of someone else 'operating' it is of course potentially problematic, but the key here is consent. It'd be a privacy violation and a personal space breach if Natani hadn't specifically *wanted* to give the remote into Keith's control, but he did. At that point it's not someone else doing something which invades Natani's privacy and personal space, it's *Natani and Keith* willingly doing something together. In that case it's certainly a bit kinky, but I'd be hard pressed to ever call anything having to do with Keith and Natani's relationship creepy - they're too cute for that. Now, of course, the mix-up complicates things. Natani was *intending* to give control of the remote to Keith, not Trace. At that point it arguably does become a privacy/personal space breach, but I think it's important to note that it's not something that anybody intended or did on purpose. It certainly is/will be extremely embarrassing, which is where the humor is supposed to come from (that particular brand of humor does nothing for me, but that's just me), but it's not someone maliciously or intentionally invading Nat's privacy/personal space or taking pleasure from it, which is IMO what would make it creepy.
Which isn't to say that the whole situation doesn't make me cringe a bit. Characters embarrassing themselves/getting into embarrassing situations has always made me feel acutely uncomfortable rather than amused, which mostly comes from my own social anxiety I think. I can never find it funny, as my brain is always too busy reflexively imagining myself in that same position. I just have a hard time laughing at a character's discomfort.