The issue is not just with keyword filters. Porn - as everyone would assume is to do with sex. To name something *.porn which is nothing to do with sex and could be everything to do with something educational/beautiful is idiotic as it can cause confusion and due to these filters, as well as their own caution - people to lose out
But why is it that idiotic? Honestly, the issue is the keyword based filters, not so much the .porn thing.
The issue is not just with keyword filters. Porn - as everyone would assume is to do with sex. To name something *.porn which is nothing to do with sex and could be everything to do with something educational/beautiful is idiotic as it can cause confusion and due to these filters, as well as their own caution - people to lose out