Kinda. The article does mention Amazon's considering supporting for all three, but does say "Cranston would get the leading tip," which I think is the most likely. Amazon has only been in the Oscar race for two years, but I doubt they would do something that ridiculous, especially with how weak Best Actor is this year, and Amazon might also campaign for Jim Belushi in Wonder Wheel, making four contenders a bit of a stretch.
Although if Carell is going supporting, then that means he's probably going to get the nomination over Fishburne (unless voters are split between him in LFF and Battle of the Sexes)