That's pretty cool, thanks for sharing! You also seem to be a confident public speaker, so keep at it
Having never been at a fsf conference I wonder though if the audience isn't already so technically inclined that they probably reported many bugs before
Might be a case of a talk looking for a more suitable venue.
Which brings me to an interesting point: with the recent increase in indie/comercial games available on Linux there has been a sort of clash of cultures in regards to bug reports / support requests. Quite a few smaller developers have stated that they get an much higher amount of support requests from Linux users than others, and most of the time this is considered a bad thing costing time and money.
From their perspective it is kind of understandable (a sale is a sale, and after market support often is only a cost), and it might be partially due to lower quality Linux ports from inexperienced developers. However, I suspect it is mainly a cultural difference in so far as most Linux users have gotten used to open-source projects encuraging testing and bug reporting.