Not on board with this at all.
First of all, the pockets are looser than at the UK Open, so that mistake was corrected. Second, all comers to this event knew what the equipment specifications would be at the World Championships months ago, so they had ample opportunity to prepare for it. They also knew who they'd have to compete against.
Finally, the argument that slow play is justifiable because big money is on the line doesn't hold water. Slow play is penalized in all games, because event producers know that fans don't enjoy it when competitive encounters drag on and on. That's why basketball has a shot clock, baseball has a pitch clock, football has a play clock, and why seemingly every sport penalizes those who drain their sport of its energy through slow play.
Keeping pool marketable and exciting is all that matters and tolerating lethargically slow play compromises the quality of the pro pool product.