Almost everyone has the Insane? I don't agree with that assessment at all, I think it's just your perception. True, there'll be an increased number of people with the title as more time passes and more people get a chance to finish it, as well as with the removal of the Shen'dralar (I wish Blizzard would put them back in; my unfinished reputation mocks me) and the Darkmoon Faire rep being soloable now for people who don't mind waiting months or however long to max it out, but let's face it:
It's the Bloodsail Buccaneers that were always the biggest stumbling block for players, because they involved wrecking four reps. The people who went and did that anyway were the sort of people who would have done Insane regardless.