What's the most petty/pointless/pedantic hill you're willing to die on?
For me, it may be that the toilet paper roll needs to have the open end away from the wall. I don't want to reach under the roll to take a piece! That's ludicrous!
That or my recent addiction to correcting people when they use "less" when they should use "fewer"
Canon is important to science fiction and comic book adaptations because the rules of those universes operate so wildly different from our own that it is important to put more work in keeping things consistent.
I mean to paraphrase Brenan Lee Mulligan: “if you have magic that can teleport things instantly, giving the task of delivering letters to Earth’s slowest bird is animal cruelty.”
Gene Rodenberry's Andromeda would have been amazing if they hadn't fired the first season writer and remade the show for syndication.
He posted a 'It's not canon but if I were still an employee it would be' post and it was amazing and so much better than all the seasons that came after.
So in my mind, the original creator's vision was the true vision and the bastardization of corporate greed that resulted is an abomination and all involved should be whipped.
So then let us agree that some rights holders take better care of their IP than others. Earth Final Conflict is another example of this terrible trend.