Bizarrely, the video had been age-restricted roughly one week ago, only for YouTube to relent to the creator's appeal and claim that the restriction had been placed in error.Remember, this is Mega Man 2 we’re talking aboutYouTube's initial notice did not clarify what moderation flag Summoning Salt's latest video—a video that documents the 18-year history of people playing and exploiting the NES game Mega Man 2, embedded above—had triggered.As Summoning Salt explained, the video includes a three-second outburst of six F-words, taken directly from a Twitch streamer's microphone during a passionate gameplay moment.Summoning Salt, a speedrunning-fluent creator, took his analysis tools to the microsecond level and looked for other unrestricted YouTube content in the gaming category to see whether his video's curses-per-capita percentage (0.16 percent) had been exceeded.According to YouTube's own rules, the line between "moderate profanity" (allowed in YouTube's unrestricted videos) and "strong profanity" comes down to not only specific word choice but also frequency, and YouTube merely suggests that the line is crossed when reaching a threshold of "used in every sentence," or having certain swear words appear in prominent moments like the first 30 seconds of a video or as text in a thumbnail."