... and this is why we end up with rubbish like the Michael Bay Transformers movies, which give the middle finger to the fans while being wildly commercially successful with people who go "OOH! Big, shiny robots!"
This post expresses exactly what it is that I find strange about fans and "canon".
There is a strange sort of assertion - "give the middle finger to the fans" - which implies that commercial entities have duties to provide stories that some fans of some past stories will like. I find this strange because I have no idea where this duty is supposed to come from. No one thinks that (say) J K Rowling has a duty to write any particular novel about any particular character just because, in the past, she wrote some novels about a magic school that some people enjoyed. So why are the publishers/creators/owneres of the Transformers, Star Wars, Marvel Comics, the Forgotten Realms regarded differently?
But as well as this assertion that something is owed, there is also a kind of other-regard or attachment that seems equally unwarranted. Why does the decision taken by someone else about what story to tell about Transformers (or X-Men, or Eladrin, or . . .) matter? Adding one more mediocre film to the list of thousands of such films over the past century or so isn't going to do anyone any harm.
If you don't like a movie, then don't see it. Of all the movies that you haven't seen, or that you saw and didn't like, why does
this movie count as one that "gave you the middle finger"?
And all the above to one side, no one is going to pay $150 million on a movie that appeals only, or even primarily, to fans of a 1980s line of toys.