I disagree. Sometimes (frequently, even) games do have a subtext to them that the designers may or may not have intended. Some frequently even have a subtext that is simply pervasive in society, that the designers simply passed along because it's an everyday part of some people's assumptions.
I disagree that any depth of analysis of games is a waste of time, and the idea that games shouldn't be taken seriously as full-fledged media (like movies, books, comics, music, etc) is total nonsense. Either games get to be a form of creative expression (which they are) and are subject to criticism and analysis, or ... there is no "or."
And really, why do you care if someone stumbles across something in a game that they find disagreeable? I mean, seriously speaking, so what? Either you can relate to it (and maybe that affects your ability to enjoy the game) or you can't relate to it (and thus it's not relevant to you). If you can't relate to it, why do you want to mock it? Why does it matter to you?