No reason to make a fuss over canon or not until then; Nobody important died so it really wasn’t needed but then Jack did something in a cutscene which required them to not be canon as well as end game with Jack. Only way to have them be canon would be to have a stupid “well so and so didn’t have enough money or paid their monthly fee” or equally bs reason that people would rage over.
I personally wouldn’t mind them being canon but only if they can come up with a reason why Roland and Jack are MIA in post BL2 story (when the DLC happens basically) and are still MIA in Tales from the Borderlands (Digi Jack/Roland is not the same as flesh and blood Jack/Roland)
You know what the original vault hunters should do? Make a digi Roland in honor of flesh Roland.