Thanks kindly @Cha, @Gorath44000.
I'm torn between hoping that it'll at least be delightful in enough ways that I want to encourage this kind of thing and the feeling that it won't have been pushed hard enough into the sense of atmosphere I'm hoping it will be and likely to be unfulfilled in. Irrationally, everything gets compared to KRZ and it doesn't matter how much I tell myself that I just can't do that, I invariably do anyway.
I do have to admit to having a greatly diminished experience of Firewatch compared to many, it would seem, so the advice seems to be on point - there were some very strong moments but perhaps my expectations should have been in check. All in all when I examine what it is against what I perhaps hoped it would be, it's still alright... similarly, not entirely sure I'm in for another play-through, though for a few other reasons too not directly linked to expectation.
The thing is... it's at most, what, $15? Even if there's only one or two good things in it, that's not a lot to pay, but I'm asking myself, am I encouraging those things? Is playing and discussing enough? Time to don the overthining badge.