I could maybe see some versions of this that make sense. In my home city, for example, it's illegal to panhandle from cars along the curbside, and there's practical reasons for that. There were intersections that used to have homeless people claiming "turf" on busy corners where cars had to stop at red lights and it was dangerous for everyone involved.
This being Texas, though, I'm sure practical reasons are only there as an excuse for the cruelty.