I'll tell you what - the title of the thread made me laugh out loud...good stuff.
As far as people just taking quick snap shots...to be honest....I've never run into anyone doing a full on photo shoot with fans and lighting etc..

soo... .
Here is the thing - I consider myself hyper sensitive to the "this is my world and you live in it" type people and I would have to say Photography is one category that the entitled people of the world don't seem to care about. Besides if they are... aren't they all taking "selfies"?????
More often than not it's a quick pic and I'm happy to wait for them to catch their moment. And on the flip side..I myself have been going for quick snap of a pic of my family and I'll see a crowd of people stop and wait....and I'm like..no worries folks - pass on through I'll get the shot eventually.
Now if you want to talk about line cutters.........Just kidding....just kidding....