Yes, and you can can have sympathy for one person without having to care for everyone too.
I think the "do this for every disabled person" in the OP is... Bullshit. Reminding people to funnel some of that sympathy to other, closer people where you can have more impact in their lives is reasonable, but the sentiment here is condescending.
And you can praise one member of a community for the acts they do without being expected to praise other individuals in the group just because they're a member of that group.