Would Bethesda or someone close to them, please confirm or deny if Michael Kirkbride's OOG works are Canon or not?

You're new here. Bethesda doesn't talk with the fanbase.

That's not going to end any wars

For what it's worth, Pete Hines (the PR director) has previously answered that question with an awfully specific "it depends."

Bethesda communicating with the community? doesn't happen

in all honesty, it would just cause the flames to burn higher

There are "wars" about this?

My advice is this; don't get too worried about it. There is nothing wrong with entertaining either possibility as things are, even if you don't personally subscribe to it.