Why not? Why does CBS get to dictate how you interpret the material?
Besides, I really doubt CBS gives two shits how I interpret the material.
Because for better or worse, content creators and copyright owners get to have control over these questions. Not fan interpretations...but those are nothing more than fanfic. People make sweeping pronouncements on here about whatever being in an alternate universe and it isn't. Or at least what they should say is "I want DSC to be in its own universe."