I've been on large and small teams of people that cared and didn't care. It feels noble and reasonable and right to tie it to a greater purpose; like your soup kitchen vs supermarket example. It's not that type of care the OP is getting at.

It's closer to a craftmanship kind of care. Being proud of what you're putting into the world. Caring that it works well, not because the purpose is important, but because it's something you're doing and you want to do it well.