[edited out]
Most Bitcoin hodlers that call themselves investors are traders. This is because they sell their coin when they observe increase in price or little dip. A good knowledge about votality, market trend and fund management is required to be a good investor.
You really believe that investing requires knowledge about volatility, market trends and how to manage funds? Do you need to know those things prior to starting to buy bitcoin? And what do you consider the role of selling to be for an investor?
I think the OP have made some mistakes with his reference of calling investments as gambling, but I disagree with him that investment in Bitcoin can be categorized as gambling because it’s a totally two different things entirely, investing in Bitcoin doesn’t mean you loose your money immediately, but bitcoin your money is still there, and you keep stacking your investments is there.
Surely, investment and gambling are two different things, no one argues that. But I think I understand the OP properly and I don't think he is that wrong in his reference about investments becoming gambling. If you read the topic properly, you will notice he was trying to recount a situation where two investors who started the Bitcoin investment with a long term goal, but along the line, mindset and approach changed.
Mr A continued with the long term investment and HODL approach, while Mr B became intoxicated with the little jump in price and started taking profits, monitoring the market, studying charts and selling and buying back in decline. Of course, such attitude of Mr B is the character of a trader, and trading is just like gambling which is full of risk and has no intentional value because we can always lose and win by chance or luck.
Inorder words, our approach to our investment matters alot. When we approach out investment with a trading mentality, then, we may likely say we are gambling with our investment and also putting it at a very great risk of loosing it.
So I believe when he says in his topic that investment become gambling, he was actually referring to our individual approach to our investment, stating that if we don't invest properly and have a good approach to it, our investment can actually turn gambling.