I've looked at a bit of it. You are probably noticing his blunt honesty. The guy is remarkably open about showing a lot of stuff, including his mistakes. If he were a pumper/dumper, he is actively avoiding many opportunities to increase his +EV from scamming. He posts videos listing all his mistakes and faults, gives personal information that is arguably very embarrassing, etc. Stuff like admitting to addictions (of drugs or habit), past ethical transgressions, describes how he used to think of himself as a pretty awful guy. It's possible he's just bad at pumping/dumping, it's possible that he is genuine. My read (as a long-time poker player and researcher) is the latter.

I think his positivity comes from successful recovery from addictions he describes, as that is a typical and healthy attitude to have post therapy for various addictions. This is what you would want to see after psychotherapy or CBT, not that I am suggesting he ever had any.

I am not in a position to pass judgment, and if it wasn't for him, I may not know about Steemit, as I happened across one of his videos on YT when researching altcoins.

This is all assuming the information provided is generally true, which again, is my read, for what it's worth. A one in a million+ con-man could hypothetically create much of this persona, and doctor things like all his tax and bank statements he openly shows.