Or they don't ask, and buy semi-permanent sea access for the bargain price of one angle grinder, some unassuming hinges, a latch, and a can of matching green paint. I'm assuming that most of the home-buyers would be Scots, after all.
The folks on the other side of the fence are certainly Scots with an interest in public access to Archerfield Woods from the coastal walking trail.
I very much doubt that such a fence would be patrolled or otherwise monitored well enough to prevent rogue gate installation from happening.
If this was in the U.S., the same people cutting holes in the fence would simultaneously be posting signs saying "no public beach access" and blaming the holes on outsiders bent on ruining both beach and neighborhood. The zoning and development board would quietly be enjoying their kickbacks from the developer, and winking every time the fence got mentioned.
They know that fence isn't going to last. It's only there so that no one starts a protest until after it's too late to be effective.