Yes it's a problem, but perhaps less than you might think. First, in most cases PR spin has a "smell". Spotting that in an article an editor may dig into the e

Yes it's a problem, but perhaps less than you might think. First, in most cases PR spin has a "smell". Spotting that in an article an editor may dig into the edit history - where the story will be pretty clear of which links are removed, wording changed etc. There are about half the editors that there were a few years back, but many will work on a very wide variety of articles, and in many cases spotting and resolving "spin" issues doesn't require special expertise - and just highlighting that spin is going on can be useful in itself. Pro-tip: When reading anything on Wikipedia it's often useful to check the associated "Talk" page for any ongoing controversy, and the "History" page to see what the article said 6 months ago.