My guess is that over the next decade, you'll see the rest of the recommendations disappear or almost disappear.
I believe they have kept the ones they have now because it is too difficult to argue with people who are convinced it works (including some of their own), they do not want to deal with lawsuits that they pay to defend (even if they win) - which ratchet up their malpractice insurance costs, and because they don't want to look like complete idiots, as they have been espousing this method for decades without any proof of effectiveness at all.
For a parlor game, have some friends list out things that the health and medical establishments have said were good - or bad - for you that turned out to be untrue. It can keep you occupied for quite a while, especially if you have some folks there who were old enough to remember the health ads and warnings of the 1950s and '60s, the time when the use of "prophylactic antibiotics" was dreamed up.
MRSA is only one of the unpleasant and dangerous side effects that can occur because of frequent antibiotic use. Older and chronically ill people have the effectiveness of antibiotics in their bodies impaired, allowing them to get opportunistic infections that their bodies can no longer fight even with the help of newer antibiotics. Unfortunately, the notion that there will always be a new antibiotic to counteract the superbugs created by wanton antibiotic abuse is badly faulty. Several drugs that have only been out a couple of years have already proven ineffective against yet newer versions of the bugs they were developed to stop. And there's not much new in the pipelines. We're at risk, and worse: our children and grandchildren are at risk.
Best wishes,