Really, one they are faked all the time.
Some may be faked but where’s your evidence for “all the time”? And…
Notice I said need.
Not want. Not just felt like having one.
Two you can get one for just about anything.
Since you're in FL, here is what you can get a maximum six-month temporary one for (from Form HSMV 83039 – Application for Disabled Person Parking Permit):
2. Inability to walk without the use of or assistance from a brace, cane, crutch, prosthetic device, or other assistive device, or without assistance of another person. If the assistive device significantly restores the person's ability to walk to the extent that the person can walk without severe limitation, the person is not eligible for the exemption parking permit.
3. The need to permanently use a wheelchair.
4. Restriction by lung disease to the extent that the person's forced (respiratory) expiratory volume for 1 second, when measured by spirometry, is less than one liter or the person's arterial oxygen is less than 60 mm/hg on room air at rest.
5. Use of portable oxygen.
6. Restriction by cardiac condition to the extent that the person's functional limitations are classified in severity as Class III or Class IV according to standards set by the American Heart Association.
7. Severe limitation in a person's ability to walk due to an arthritic, neurological, or orthopedic condition.
8. Legally Blind.
A permanent permit requires legal blindness or permanent disability that limits or impairs ability to walk 200 feet without stopping to rest. Whether temporary or permanent, the form requires signature by a licensed medical professional.
I have seen perfectly healthy people walk away from a lifted 4x4 truck or Jeep with one of those on their mirror.
At least 2, 4, 6 and 7 above and a permanent disability that limits or impairs ability to walk 200 feet without stopping to rest are not necessarily visually obvious and do not necessarily preclude entering and exiting a lifted 4x4 or Jeep. And…
Unless you had some knowledge this man was "gaming" the system, I think you are out of line.
For the record, I agree that once the guy presented paper showing the dog is a service/therapeutic/whatever animal, the cop should have dropped it and moved on. But from your and some others’ posts, I have to wonder whether you and everyone else who objects would be so incensed if a plain ol’ disabled person, rather than a vet, was involved.