Yes, it is that and an easy route to find sex. It’s also sleazy, which is part of the appeal. Park sex isn’t new and neither is the risk of being arrested.
The guy is probably gay or Bi and is closeted. Being from a well known family makes anonymous sex sound like an appealing option.
I know out of the closet, gay men who still like anonymous park sex, although there is no need for them to hide.
Way too much is being made of this. If the worst thing someone did was shake his weinee at a cop, we should count ourselves lucky.