It’s such a short read that I’d say it’s worth it. There’s also more than just inconsistencies. There’s about thirty extra pages of material to the revised version.
I’ve never read anything by Stephen King (and I don’t really plan to), but wouldn’t the original version be what he intended to be published after originally finishing the book? Like, wouldn’t all that extra material just be essentially filler? It just seems like a Special Edition situation from the POV of someone who’s never read them.