I have time traveled in the past, but while it was a blast at first, then I burned out. Each new day forward was a tedious repeat of money rock and fossil hunting. Just keep moving forward looking for the furniture I was after, and always trying to remember the date. Some days I just couldn't work myself up enough to play, and if I missed a day, I might miss an item I was after. So I had to remember the date, so if necessary, I could travel backwards. Rinse and repeat.
Yeah, same for me. I have time traveled in all past animal crossing games. I never looked on any forums animal crossing related so I had no idea it was looked down upon. Since I've been waiting for this game for about 2 years I don't wanna burn myself out. Although time traveling is tempting sometimes, taking it day by day is so much more rewarding. In my opinion, time traveling just gives you a quick fix. You'll get bored of the game in no time. But it's your own game so play however you want! It's not hurting anyone, so I wouldn't worry about it!