To invest, a person needs basic knowledge about Bitcoin, faith in Bitcoin, and a source of discretionary income. If a person has these things, then he should invest immediately.
I agree with you on two out of the three requirements you listed here. The one I disagree with is faith in bitcoin, because someone don't need faith in bitcoin to invest in it, because with or without faith bitcoin will do what it intends to do. It is not ones faith that makes bitcoin what it is. Bitcoin reacts to the law on of demands and supply and not faith. Faith is something that's more related to religious fantasies and bitcoin is not a religious something. Bitcoin is not related to any religious beliefs. That being said, an investor doesn't need faith to invest in bitcoin.
I think the faith he’s talking about here isn’t the religious faith, it’s just using the concept of faith to describe having trust in bitcoin because when we invest we don’t know for sure 100% that bitcoin will grow and reach our expectations, we just hope and believe it does based on its historical trajectory but also anything can happen and we don’t know for sure.
So a newbie having faith in bitcoin doesn’t mean he’s taking it religious it just means he believes in bitcoin that it’ll keep going higher and higher especially when there’s a dip or down trend.