The answers after that post are pretty clear that what she wants to do and what the gazillions of tourists are doing is not DIR.
Yes, the post you referenced *could* be a troll. On the other hand, maybe there are still a few self-taught cyber-DIR divers out there who don't yet realize that the DIR air limit is 1 ATA and that for anything deeper, Nitrox is usually a better choice. Either way, since it was the OP who posted the follow-up question, I chose to give her the benefit of the doubt. Especially since she got plenty of civil DIR answers.
Yes, the post you referenced *could* be a troll. On the other hand, maybe there are still a few self-taught cyber-DIR divers out there who don't yet realize that the DIR air limit is 1 ATA and that for anything deeper, Nitrox is usually a better choice. Either way, since it was the OP who posted the follow-up question, I chose to give her the benefit of the doubt. Especially since she got plenty of civil DIR answers.