I started ocean swims many years ago, at the time may be less than 10 swims per year available.
I am now 65 and retiring soon. When I became 60 I recall in one race I was 2nd oldest. Now swims cost $40 minimum and no class for those over 60 or younger ones in some races.
Ten swims per year $400?
The number over 65 is very minimum and if they consider a discount for those over 65 the loss to the club would be minimal it may even increase due to extra swimmers.