You need to understand the dynamics of LA residential politics. Neighborhoods like Beechwood Canyon are fantastically expensive and are filled with industry elites. They are also extremely inconvenient to build on and travel through, with tiny, twisty single lane streets that clog up with traffic very easily. I am not at all surprised to see that some of the residents are using their influence in the entertainment industry to get a big studio to pay to get tourists out. At least it's not taxpayer money.
One can make the very valid argument that these wealthy homeowners knew exactly what they were getting into when they bought property near one of the most famous tourist destinations in the world. Having gone there once, I can understand why they get annoyed however. Parking is already difficult, not everyone has a driveway or garage due to the terrain and to make it worse, bad behavior by visitors (throwing trash on the ground, defecating/urinating in bushes [no public toilets], etc) makes a tony area look pretty crappy.