It really is a glorified exhibition, with a dumbed down format.
And the fact the whole thing was based on singles ranking for a doubles event was completely screwed up.
Fizzy Katerina was very vocal after winning Wimbledon that she wasn't impressed at not automatically being part of the US Open event. It really does have to be won by one of the actual doubles players (even if it means perhaps Jannik will benefit).
Jasmine and Aryna definitely made the right call, withdrawing.
I thought Jannik, Carlos or Iga would withdraw too. But there was probably a lot of pressure on Carlos due to the (probably totally fabricated) romance rumours, which will no doubt overshadow most of his matches anyway.