Investing in Bitcoin is not risk free especially to investors who do not invest appropriately with the right approach and strategy, and also not sticking to their investment plans (long-term).
I disagree with your statement partly because long term investing is not risk free. Investing in Bitcoin or other coins certainly involves risk. If you are a professional investor then you are used to taking risks as the price of any currency is not always the same and fluctuates constantly.
I don't seem to see what you disagree about here, you guys are practically saying the same thing and that is the right mindset any reasonable investment should take to the market instead of believing the market is cheap to the point that it's risk-free simply because they are either experienced or investing with the long-term strategy. No strategy doesn't carry its own weight of risk, the only difference is that one is lesser than the other. Still, our preparedness matters here as nothing will shift easily if we do not exert the needed force and be wise in doing it.
Also, Investments are tougher in other assets I've known, but with Bitcoin and a few other altcoins, they are cheap, which is an advantage. With a little learning, one can start managerially, which is why I encourage everyone to always go for them and override the little risk involved with a bold mind and the right managerial calculations.