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I hate it as much as you do but it's an open market and wrong advice is not criminal.

definetly a hacker though

Nobody said it was criminal. But it is most likely negligent.

If I rely on his books which presumably have no editorial oversight, he'd better hope I don't suffer a loss as a result.

I bet there are several clauses in these books the protects him from a legal perspective similar to all of the evergreen products out there.