If we define cheating as "something the game allows us to do", then no, it's not cheating.
Then again, I consider shaking your 3DS with your hand to get Play Coins as cheating, even though it doesn't say "please only walk around to get play coins". They're called steps, and it's pretty much inferred that you're supposed to walk-- but let's face it, a lot of people shake the 3DS for coins instead. Just like a lot of people TT in Animal Crossing.
I can't call anyone a cheater for it, no-- I'm just more impressed by the people who don't Time Travel. I think people who do Time Travel are less impressive with the stuff they achieve.
Then again, I consider shaking your 3DS with your hand to get Play Coins as cheating, even though it doesn't say "please only walk around to get play coins". They're called steps, and it's pretty much inferred that you're supposed to walk-- but let's face it, a lot of people shake the 3DS for coins instead. Just like a lot of people TT in Animal Crossing.
I can't call anyone a cheater for it, no-- I'm just more impressed by the people who don't Time Travel. I think people who do Time Travel are less impressive with the stuff they achieve.