"A jury of your peers" doesn't mean people of your specific demographic profile. A woman doesn't get an all female jury, a Muslim doesn't get an all-Muslim jury, or anything like that. A career criminal doesn't get a jury of other career criminals. Your peers are your equals-- other free citizens of Canada.
Slight correction, a random sampling of other free citizens. If you only get old farts, then they are not your peers, they are a special interest group (in your words: specific demographic profile) just like the others you listed.