599 Threw the Timeline Out of Whack!!!
1) Minato became the Hokage AFTER Obito died. But his face was on the Hokage monument in ch. 599
2) Kakashi takes the Chuunin exam with Obito and Rin. Its known that Kakashi became a Chuunin at age 6... But Obito graduated from the academy at 9 years old. So did they allow Obito to take the Chuunin exams BEFORE he even graduated the ninja academy?
For this to work Obito would have to be 3 years older than Kakashi. But that doesn't make sense in example 3...
3) In ch. 599 Kakashi got promoted to Jounin shortly after Obito got promoted to Chuunin. But Obito was 11 when he became chuunin and Kakashi was around 13 when he became jounin. This would imply Kakashi was actually older than Obito...
4) Kakashi was 13 when Obito "died" and he got his sharingan. Kakashi is 30 now and Naruto is 16-17. So that means Kakashi was 13-14 when Tobi attacked the village. Are you telling me that Obito experienced that big of a growth spurt (although that would explain Minato not recognizing Tobi/Obito's voice) and power increase in less than a year?
I was a Tobito theorist for the longest but even I have to admit there are alot of holes...