It had Chapman stick
A vaguely interesting novelty that really didn't add much.
it had the incredible instrumental Hell’s Kitchen
I'll agree with that, but I would argue that it's no better than DT's fourth best instrumental.
greats hooks
I disagree. For me, it's a largely unmemorable album.
soul (see Anna Lee)
I like Anna Lee just fine, but it's nothing great.
and it had Derek mf’ing Sherinian.
Whoop-de-f'ing-doo.
Here's the thing, even if I were to agree on all of the points you made, you haven't made a case why it's "the last truly great DT album." Are you suggesting that SFAM and SDOIT aren't great? Or are they "great" but not "truly great" (which would mean they're what..."falsely great")? Ultimately, to say an album is or isn't "great" is nothing but a subjective opinion. I generally think SFAM is DT's best album, but that doesn't mean I don't think several of their subsequent albums are "great."
As far a FII, I think it generally lacks balls and is mostly uninteresting. I typically rank it in the bottom 3-4 DT albums.