If you're referring to the post about the small trib off a larger lake erie trib, I would have to agree with them. There are so few places where a trout can reproduce or even survive a summer, that they should be kept off of the web. These places in the wrong hands (or folks fishing them, in this case) can be ruined quickly. It isn't the members of this site that are the issue -- it's the guys that search these sites for information without contributing anything in return.
I believe that most of the regulars on that site would define guarding of information as not posting about tribs that aren't stocked/advertised by the state. Problem with posting about some of the smaller tribs (with the exception of those that can support year-round trout) is that the hoardes head to that area and either trash it and/or trespass, causing more water to be posted and no longer available for those of us who discovered these small tribs the "hard way". I had an experience a few years ago on a very small lake erie trib that held steelhead, and would be sporting, only at higher water levels, when the other larger tribs were blown out by rain. Someone stumbled across this area, posted their success on the web, then proceeded to "invite" over 20 of their "internet friends" to this creek, which comfortably fishes about a half dozen folks.
The problem with the internet is that many more search and read posts than are 'members' of a site. So, I tend to restrict use of exact spots to "streamside discussion" or PMs.