When a publication uses an anonymous source they are saying, "This person who has real credibility says this. You will have to trust us that A: That person has credibility. B: That person said this.". This means the publication becomes part of the news rather than reporting it (which is bad), but in this case the worst part is that the Escapist has no credibility, so it can't be taken seriously.
When WaPo relied on anon sources for the Watergate scandal we were talking about a top shelf publication betting their very valuable reputation. If it turned out to be tripe they had a lot to lose. In this case we're talking about a mediocre gaming news site paying bottom dollar on shit-tier gaming journalists trying to make click bait. They simply don't have the standing to use anon sources and not be laughed out of the room by anyone who cares about journalistic integrity.