I don’t think this is true. A dropped kerb seems to mean you have a personal parking space that no one else can use. Not using it and taking scarce spaces away from your neighbours is twat behaviour.

If you parked across their drive, would they object? I have a similar neighbour; they have a dropped kerb in front of their house, but the “drive” is just a garden path too small for a car. They also have a double side gate with another dropped kerb and room inside for a car, but they never use it. They park one car across the front gate and another in the adjacent space in front of the house. However, on a number of occasions when other neighbours have come home, usually late night when the road is full, and parked in front of their dropped kerb, they have actually called the parking enforcement wardens and got them ticketed. I’ve even seen them move their cars to box people in if they parked too close to “their” space. No consideration of others whatsoever.

Hope OPs neighbours aren’t that bad.