That seems exceedingly harsh to me. Until now, I didn’t even know that there was a rule against asking. While I always respect people’s space — celebrities or otherwise — I can see how just about anyone would ask for an autograph/photo, which is reasonable and, indeed, an innocent request. If a guest is disrespectful or difficult, then by all means warn them.
If I see a guest that appears to be confused as he/she reads a map, I’ll often approach and offer to help. About half accept my help, two-thirds of the remainder don’t but thank me and the last fraction can be jerks and dismiss me rudely. If they reported me to Disney for violating their space/making them uncomfortable, would I likewise be kicked out of the park?