I think these films never had a real chance to score high, because it's had some difficult "opponents" to beat:
Lord of the Rings - the film
A large chunk of people were ultimely satisfied by Jackson's LOTR. "Lord of the Rings was fantastic, nothing else can match this". With such an attitude, it's going to be hard to be satisfied indeed by a second Jackson production. Lord of the Rings was a first in many ways, when it comes to techniques, but also epic proportions.
Lord of the Rings - the book (A + B )
This works two ways: The LOTR books are much more popular
and they are more suited for film.
So, it's 3-0 for LOTR already before Jackson recorded the first Hobbit film scene. Jackson tried to make
The Hobbit a more darker film, and he added lots of drama and epicness, but also storylines that do not appear in the Hobbit book, to make an exciting film. But it works against him: A critic that's often heard: "Too much, it's not like the book".
For years, we have known that Jackson would make three films. Still not used to that idea?
Then what were the expectations? Of course we couldn't expect one film anymore. How (on earth?) could this film be better? Let's for now, purely speak about this last one. I can go with most of the critics on the first two but how on earth were these scenes uninspired? How else should they have been done? The "I've seen it all before" is not correct. This battle added some new and better aspects. Better duels, there was more suspense, some parts were unexpected, also partly because some of the fights took place on different, separated terrain. (Tolkien purists would hate this originality, so it's never good enough for everybody). But in all honesty, the techniques have also become better. Personally, I thought it again looked better too.
I read a complaint about the diversity of orcs. In LOTR there are more different orcs than in the Hobbit. This time I thought some of the orcs looked rather large, but I never missed anything in particular. At times, I even thought there were too many trolls and such.
.. the battle scenes were tired and uninspired, I'd seen it all before in the LotR films, when they were jaw-dropping, original and genuinely scary and tactical. .
This battle is in another story, with its own haunting plot. It was a battle with a different background. I can feel empathy for it, especially its build-up made the whole thing different. How was this one less tactical? Why less scary? Perhaps, in the LOTR books more scary things happened (e.g. Eowyn's fight, but outside the LOTR battle, there were countless of more scary moments in the LOTR book). How can we blame this Hobbit
film for a lack of scary things in the book?
I mean, I am honestly curious for your argumentation but at the same time I think this also has to do with the ability of getting into a film (to get sucked in totally and try to erase all the other factors; during the whole moving I did not think a second about LOTR), understanding the choices that were made, and the material that it was based on.