I think what he mean is all of their money since its not really advisable to do since instead of you will be fine even if the market collapsed you will get panic about the situation since all of your money is there and get afraid of certain possibilities that you have a chance to lose.
Much advisable to invest only the amount you afford to lose since any situation that will occur for sure will be tolerable to the investor since this is just the spare money used for investment and they can focus on their goals since there's nothing to worry about on some situations currently happening in the market.
That mentality is only going to hinder you from attempting to invest above 5% to 10% of your income and that in itself means you're just gambling and don't understand what's the prospect of Bitcoin. Investing into Bitcoin isn't gambling that's a 50/50 thing and that's why Bitcoin entosiast like micro strategy still buys the amount of Bitcoin they are currently buying. Do you think they are buying at such pace and with such amount because they want to loose as high high $13.6B worth of Bitcoin? Once you're talking about investing with the fear of a possible market collapse then it goes to show you can't invest inti bitcoin for the long run and that any correction you see with look like a threat that will tend to give you the impression of pulling out your asset.
Your wrong @maverlokg, it's right to invest the amount that you can afford to lose even when investing in an asset like Bitcoin and that does not mean that you are expecting something bad to happen to bitcoin, what this means is that you are aware that they is a possibility of your bitcoin investment to go to zero or not generate any profit throughout your time of investment, yeah no one invests and expect to lose all his investment along the line but when dealing with the future we still try best to retain the fact that anything is possible and to be prepared we must act alike and what you decide to do with the information of that possibility is up to you, if your response to that is to have a more whimpy investment and that's how your risk tolerance allows you then its okay and no one would force you or should tell you that to get more of the other possibility that bitcoin may increase in value and to get more out of it you should also invest more aggressively.
Yeah some people would rather think of a way to diversify into other asset as means that incase their investment in bitcoin doesn't do well then the other may do well. And at times it's better to have a well built investment in bitcoin then you can comdiser diversifying into.other asset at least 80% in bitcoin and 20% in other asset and if something happens you have back up.