(I actually just read the bottom sentence on like 50 pages trying to find something, and damn if I couldn't actually really find a word that was not needed or useful.)
At the very least from what I recall there are sections of songs and poems which made my eyes glaze over and just skip.
I think one of the best things the LotR films did was to distill the story down into its best parts. The hobbit kinda did the opposite which is why they were, as enjoyable films, comparative failures.
That said, the only poetry I really get anything out of is John Cooper Clarke, and I’ve heard him perform and so have a very clear mental sound of how the poem should be delivered. So maybe it’s just me.
I felt the same way the first time I read the books. But the more I re-read and understand about Tolkien's worldbuilding the more I particularly appreciate them. The culture of Middle Earth is passed down by song and poetry, and when songs show up in the books they aren't just random interjections of the author but strands of culture connecting the characters.
If Tolkien had sprinkled more of the content of the Simirilion throughout LotR a lot of the meanings and symbolism would have been made more clear, but I don't think it would have been as immersive. The enjoyable thing about Tolkien is that he balances giving you enough explicit detail to follow and enjoy the main narrative, while also giving you a breadcrumbs that reveal the complex cosmology that contextualizes everything and is in the back of every characters mind.
Jackson needs a Paul McCartney to tell him "no, take this scene out, and that one, and that one."