It's true. Back in the day I never saw anything frum at GHK.
Now it's a given that there will be others there.
Of course not, but it's more than feasible to bump into other frum people at the PH.
On this topic last week in Iguazu park, I bumped in to a group of 10 couples from Willi/Monroe, woman in
spitzlach and turbans men in woolen tzitzit above shirt, heading towards the boat ride, where most ppl dress in bathing where, for a min I thought I was in bronx zoo on Chol HaMoed.