Then everything is not canon then.
Check-mate Segathiest!
You meant Sonicheist?
Sonic Team is not SEGA!
SEGA is the one who gave comic publishers and movie producers rights to make a movie/comic/toys/whateva,not Sonic Team, so SEGA is the one who has a say which canon or not.
For example Sonic Team didn't like Sonic Underground, but they won't talk anything about it in order not to make SEGA looks bad.
They'll prefer to stay silent. Their jurisdiction is only in video games.