A good topic, Joe.
Reading these threads, it seems clear that there is no consensus about what constitutes a 'critique' or about what it means to offer 'serious criticism'. We can probably agree that the latter isn't necessarily a laundry list of flaws/mistakes. I'm not sure we can agree on the ratio of 'facts' to 'opinions' in gca; I tend to think there are quite a number of facts a serious critic could point to as part of a critique, but that his/her opinions are not always going to be logical & well-grounded extrapolations from those facts. Luckily, a work of serious criticism doesn't automatically have to be rife with opinion (or expressions of personal tastes).
By way of analogy: that Pavarotti had remarkable breath control, a warm open voice, and excellent phrasing & articulations are facts; that these qualities made him the greatest opera singer of all time is an opinion, i.e. even for a music expert with a broad knowledge of opera's entire history, the latter would be an example of a subjective preference/personal taste. BUT: that critic could legitimately-objectively point out, in reference to a specific performance by Pavarotti, instances when that well-established breath control failed him, or how the phrasing & articulation of this particular rendition of a popular aria differed from earlier versions.
In the same way, a knowledgeable, experienced and well-travelled expert on gca could point out many 'facts' about a given golf course by a given architect, e.g. that all the doglegs bend right to left, and on a straight line 'run out of room' at 220-230 yards; that the fairways average 75 yards in width (or 30 yards, or vary dramatically from 25 yards to 90 yards); that none of the four Par 5s (or all of them) are reachable in two by the average golfer -- as per average golfer distance stats; that there is not a single fairway bunker (or instead, many many of them); that the greens are very large, averaging over 10,000 sq ft, or very small, less than 5000 sq ft, and compared to the architect's other work are noticeably flatter and without contours, etc etc.
Those are all 'facts' about a given golf course. The trouble isn't seeing/having/sharing the facts; the trouble is that not many seem to have the insight or expertise to transmute those facts into a cogent and encompassing 'critique' of the experience that this specific golf course provides the golfer, or into 'serious criticism' about the quality of the architecture relative to other course by this same architect or by other architects past and present.
I think in order to do that the honest critic has to be able & willing to put aside any other consideration & agenda and simply analyze how-how well *this* golf course works as a golf architecture, and how-how well *this* course succeeds as a field of play. And that kind of "serious criticism" doesn't emerge if/when we're e.g.: focusing on how the golf course fits our own particular game; trying to access a tee time; positioning ourselves for our next gig/job; dismissing 4 decades of golf course architecture as the "Dark Ages" or advocating solely for its opposite; coming to the review process by prejudging (or with fixed ideas about) water features, or total Par, or maximum/minimum hole lengths; or even promoting and popularizing the quality work of our friends, etc.
All of which is to say: the serious critic trying to write a meaningful critique has to know a heck of lot, but also has to think deeply and to work hard, IMO. It's hard work to be able to 'see' things clearly, at least it is for me -- to 'see' things as they really are in-and-of-themselves, instead of what we want/need them to be. You know, the old line about removing the mote from your own eye before trying to pluck the speck from your brother's eye.