Back home, so allow me to extrapolate on my sentiments regarding this further--
To confirm, I called the other two Wal Marts near me and both confirmed no PS4 kiosk. Now-- I'm not saying this guy is blowing smoke up everyone's ass, because every Wal-Mart is different. Some are older, some are newer, larger, more advanced, etc.
The thing is--all PS4 Kiosks are supplied by Sony and maintained by a specific Sony representative for an area. Those kiosks are long in the tooth and many are long gone--the ones in Gamestop were removed long ago, at least 2-3 years.
The Sony rep from my region when I was with GameStop, we're still good friends. I sent him a message and he specified only a few remain, but none in my area. So chances are they are at an older store, if any. They still get updated if they are around, though.
There's just enough doubt that it could exist, but the likelihood of anyone finding it, much less one person who just happened to see it and HAPPENED to know of the Dojo is...no offense, I dont see it. But I am happy to be proved wrong, for sure.
Again--this guy may not be bogus, but you could literally go to 30 Marts before you found one.