In this particular case, who applied the name Hygrophorus foetens? I notice that it is mentioned in Largent, but it is not actually described. Largent does acknowledge Camarophyllopsis at least at the sectional level within Hygrophorus.
Dennis Dejardin applied the name Camarophyllopsis foetens. I don’t know if you know Dennis, but he is extremely knowledgeable and very careful with his taxonomy. Personally I would take a name he gave me over just about anyone with the possible exception of Scott Redhead, Lorelei Norvell and a professional mycologist who specialized in a particular group.
You said, “Making people who aren’t following the changing info, think that new mushrooms are being describe each week, that just aren’t.” I understand this perspective. However, Camarophyllopsis foetens was published in 1986. Not exactly last week. The fact is that most of us amateurs (myself included) are wedded to a small number of out of date field guides and make very little real, consistent effort to stay current. Arguably field guides do have a special status since they some of the most available literature for the general public. My goal with the site is to add a synonymy feature that makes it easy to look up observations based on any synonym, but to encourage the participants to use the most accurate names possible.
One open question, is whether and how the synonymy feature should be optional in some sense. I like the idea of giving the person making the observation a level of control over the id, but I’m concerned about the confusion this could cause in the long run.