The pre-existing cultural context is that "everyone knows" this fact that Linux is "garbage" and has "way more bugs." This is a title that directly feeds into that. You can fuel misconceptions with pure facts - that's 50% of politics. If it had been amc sinstead the conclusion would have been "oh wow, Mac gaming really must not be ready yet" if seen int he context of a gaming forum or "oh wow, Mac must be worse than I thought" otherwise. The average common fool on the street and the average highly successful corporate executive both think bug reports are bad. The audience of people who will actually read the article isn't the majority of the audience that'll be influenced by it.
Also the title might be factual but the actual article is about Linux users, not Linux, which is one way it's very easy to mislead with "facts"