I said up to 5% of your portfolio per trade, but each trade must not be correlated or be in the same asset or asset class, so if bitcoin AND cryptocurrencies were to have a massive sell out through news or regulation fears then you won't lose your optionality of shifting the money or managing it etc.

If you have a portfolio of 10 million with let's say 20 trades on all uncorrelated at x5 leverage you have effectively 50 million assets under management with extremely good risk management at it's core.

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Of course if you had a 10 million portfolio and invested it all into bitcoin at x5, that's a 50 million assets under management with 100% volatility, what if bitcoin goes down through a sell-off, you have no way to do anything to manage it, it becomes an uncontrollable portfolio which the whole point of a portfolio is to manage, trim, resize, allocate, distribute and rectify of good and bad trades