It's true that the risk attached to Bitcoin can be reduced to the nearest minimum when held for a very long time, but that doesn't mean that it has no risk, and by saying that Bitcoin is not risky anymore is misleading in my own opinion, so do not ever use such statement on newbies that are trying to invest in bitcoin because that's the worst way to preach bitcoin to a novice, in order not to be held accountable if things goes wrong for them in the future while they are investing in bitcoin.
When I say that bitcoin is not risky investment, it doesn't mean that newbies start to sell everything and put into bitcoin. I meant to say that they should invest in bitcoin for long term and with the extra money they have. For example, if one is willing to invest in property, he can change his mind and invest that money in bitcoin.
OfCourse, such person should understand that bitcoin investment may not be fruitful immediately but in the long term (5 to 10 years) it can give better returns than property or any other investments. Even if you invest in gold, the ROI in 10 years time may be less as compared to bitcoin.