Not to my knowledge. Im not sure what "state park restrictions" he considers to be a problem.
Most of the additional regulations are aimed at backcountry camping outside of the developed campsites, but here are a few of the published ones. Some of these are common sense (such as picking up your trash), and others are pretty specific to the park and don't apply elsewhere (such as requiring a metal container for fires, or prohibiting firearms).
-The California Vehicle Code applies to all roads in the park - dirt, sandy wash or paved. All vehicles must be highway legal and remain on established roads.
-Vehicles must be parked no more than 1 vehicle length off the road. Do not trample vegetation or drive over geological features.
-Pets must not be left unattended. Dogs and cats must be on the 6 foot leash and under the immediate control of a person during the day and in a tent or vehicle during nighttime hours. They are only allowed on parked roads and within your campsite. Pets are NOT allowed on trails or in wilderness areas. Your pet can only go where vehicles can go.
-Camp at least 100 feet away from all water sources (springs, creeks, streams).
-Ground fires are not permitted. A container with metal sides and bottom must be used for all campfires.
-Bring your own fire wood. Gathering or taking from any live, dead or downed vegetation is prohibited.
-Firearms and fireworks are not permitted anywhere in the park.
-There is no garbage collection in the backcountry so you are responsible for packing out all of your garbage, including toilet paper and human waste. Practice "Leave No Trace."
-All natural and cultural features are protected. Nothing may be removed or disturbed.
-Camping in Anza-Borrego Desert State Park is limited to maximum of 30 days in any calendar year.