I would think that were it not for:
1) Phil doesn't seem to harbor a particular level of contempt for his fans, just the standard dislike he has for people in general. I mean ANYONE who tunes into his streams is treated to the disgusting things that come out of his mouth. And then there's the belching, snorts, and throat-clearing.
2) He is most definitely an addict, and addicts don't really think about what they're doing (especially ones like him). They just do it.
3) As much as he only centers around himself, I don't think he's really capable of having the realization that "Hey, I'm wasting the money those retards gave me... ACK ACK ACK!"
4) His entitlement is astronomical. I doubt he sees himself as spending his fans' money. That's HIS money. It was his before it even entered his account. And that aspect of him HAS to be amplified when he's looking to whale out. I honestly wouldn't be surprised if Khet has gotten snapped at for interrupting him when he was "busy working" because he was really playing gacha. That's HIS time to spend HIS money.