[wooger]

They aren't marginalised as people, they're marginalised because the world does not have to adjust to people's arbitrary diet restrictions.

If I decided that I only wanted to eat blue M&Ms and took offense at getting a packet with them mixed with the other colours (sorry, cross contaminated), it would be unreasonable to expect the manufacturer to make blue only packs to suit me, or to expect shops to start stocking them.