there are still too many holes in it being obito and i think its just lazy writing.
1. within 2 years with training only from a man who can barely walk he was able to control the kyuubi, extract it, and begin attacking konaha and the 4th hokage?
2. he didnt have any attachments whatsoever to the village other than rin, a girl whom he had a crush on, not even his family members or even just other people in the uchiha clan
3. i guess ill accept that he may have looked full grown due to him wearing the spiral zetsu
4. the most pathetic thing, it took kakashi more than a decade to use the ms even though he had a teacher who was the hokage and the entire uchiha village there to get help from?
it seems all rushed, they didnt want to make it a new character because that would mean a longer back ground story so they justed used obito who took until about 13 to unlock his sharigan but took until 15 to not only unlock ms but also attack a village, verse the hokage and control the kyuubi? This is worse than the power ups in Dragon ball z.