For you the description of the colour of the moss on an ent's ass might have made the story bounce along, but it didn't for me.
Don't get me wrong, I did enjoy reading them, but it wasn't something I feel the need to revisit for that reason.
I'd love to see some specific examples of the outrageous wordiness. To be honest I read the series as a teen and this talk of tolkien being so wordy and going on pages and pages describing an apple in the shire, did get stuck in my mind, just absorbed that belief about it, but as I've gone back and read it a few times over the years, I just don't find that to be the case and really do find it very flowing and I'm always shocked how much of the dialogue, that I remember from the movies and assumed was written for the movies, is straight from the books.
There are lots of older books or recent books I would describe as a slog, but not LOTR