I don't think BiPolarBob is a scammer. He even tells us not to trust him in multiple posts. What kind of scammer tells you to watch out for him? Then again, anything is possible, but I think that BiPolarBob is a nice guy.
Double bluff? I don't think he's a scammer either but it's not uncommon for scammers to try give people a false sense of security or make out like they're doing a good thing or are a good person when their motives are the opposite. Seen a few scammers on here make out like they're scam busters themselves which they do to try get feedback or appear trustowrthy.
It's not the case for him , that's for sure . He gave shitload of things , he probably gets 5 pages each time he make Steam wallet of 20$ then ask people to send to charity .
1 Page contains 20 posts , 20$ x 100 (5 pages) = 2000$ per giveaway if not more . He probably gave more then 15k $ or even more (Amazon giveaways , Bitcoin giveaways , steam etc .. ) . so unless he make +15k $ transaction (escrow will most likely be used doesn't matter his trust) he won't be able to scam anyone .
TLDR; BiPolarBob is not a scammer .