I normally find the middle book needlessly padded out to justify a trilogy when they could have just made two books. It has a bit of building up for the final book, but nothing that couldn’t have been done in the end of the first or start of the last book.
I’m not saying you’re wrong, I’m just saying I feel there’s a weird obsession in both literature and film to make trilogies and a lot of the time it’s totally not needed. It’s like publishers consider it a Holy Trinity and authors/writers need to pander to them and stretch things out. JMHOFWIW.