This was a great idea to turn $1,000,000 into $10,000. Kudos! Maybe some day when the market recovers you'll have your million back! Hahahaha!! 
Black humor? On, no, unfortunately, it was a reality for many of big investors. They spent much money and bought cryptocurrencies, and they could not expect that the market would fall so greatly.
That guy probably has some kind of problems and he is just trying to make fun of him. Anyway, i am more than sure in that the OP cashed out everything as soon as he made a x2 - x5 of his investment.
Even if i see a x1,5, i would sell everything.
It is more than difficult to make a 50% of profit even on this market.
Yes, your calculations show the real situation. Now you cannot make a million if you invest 10 thousand. If you made this operation several years ago and hold BTC, you would succeed.
You got a point. Doing this kind of strategy right now would be a waste of money and investments. Most likely, taking the risk is what we are doing in cryptocurrency, so we can never tell when will the price surge high or we can ride the waves of the next bull run.