Seems to me the latest poster could have said something along the lines of ....
1. I really want to connect in LAX because if I can't get to LAS tonight then I have friends there I can over night with.
2. If I get to LAX and can't get out, worst case scenario is I can rent a car and drive to LAS from there.
3. Who knows what is happening with the LAS flight, I'll worry about any misconnect when I get to LAX.
Seems to me there are likely to be a lot of pax stressing over a misconnect and its odd that the agent would worry about someone who isn't actually asking about anything.