Do you actually have a shred of proof of that? Or is it just more of the same "Japan doesn't care about canon" bullshit? Despite the myriad of databooks that have existed trying to sort out the timeline for UC since the early 80s, the interviews with producers talking about how they personally view canon, the interview with Tomino saying that he thinks of the order of events differently than expected and then had to walk back and say he doesn't decide that since he doesn't own Gundam, producers talking about "correct history" and "parallel" in regards to UC over the last few years since Origin was animated and all the timelines where Origin is never listed?
Or will you instead cite the 20 year old interview where the above producers say "only animated material is canon", without actually understanding the interview even ignoring that it's now 20 years old? By which I mean that "only animated material is not canon" is not the same as "all animated material is canon". Which it kind of can't be, at least not to each other. SInce that would mean all AUs are canon to each other, and even if you buy into "Turn A unites all timelines", Banrise have still specified the Build shows, which are animated, as being a separate thing. Not only that, but the producers were only ever giving their opinion, even ignoring they didn't say that all animated material is canon to each other.
You also have things like The Origin animations having a different style of logo, The Origin gunpla being sold under a different line etc? So again, what's your proof it's canon to older UC titles?