Yeah I get what you're saying, the honed approach to a setlist isn't a bad thing in itself if you ask me.
On many tours, I caught them a couple times in a row and it was a different dynamic every night, despite the setlist never changing.
It's just that they seem to be refusing to mix the song selection up, despite their catalogue getting deeper and deeper and Steven being a very versatile bass player. Also doesn't help to listen to Buzz go on and on about how weird and different they operate, when the reality just feels stale and out of touch.
Not to yuck anyone's yum for this tour though, please enjoy if you're attending.