I still wonder why nobody writes they won 20 in a row as well, if the chance of getting 20 in a row losses is about 20% in 50k bets it means they should also (probably) see 20 wins in a row as well but nobody really talks about that, its not a fair game when they lose 20 in a row and you are scamming them for "making" them lose 20 in a row but when they win 20 in a row they do not even realize it, not only they don't talk about it but they literally do not realize that they have won 20 in a row because they only look at the losses.
This is a dice game, if you ask me I do not think its even 20% to hit that, I think EACH bet has a 50% chance (well in this case a bit different) of hitting, "in a row loss" is a gamblers fallacy, your last bet has the same chance to lose as your first bet anyway.
There is another good reason that people don't realise they got a long winning streak and that is our old friend Martingale. All the wins after the first one are at base bet. Very few gamblers use reverse Martingale, 2x double on win, so they don't get any benefit from a good winning streak.
Yeah, that's true that you don't get paid much for winning 1 satoshi 20 times whereas losing on martingale on 20 times in a row makes you lose a sh-t ton of money but in the end its both 20 in a row at the same place. It doesn't matter if you win 20 bitcoins or lose 20 bitcoins, if it is 20 in a row it is 20 in a row both ways.
Don't get me wrong it is still very unlikely that you will have a nervewrecking losing streak all the time, it is only far in between but if you are playing martingale and you win multiple times in a row and you are going lucky you are just making a few coins whereas if you lose 10+ in a row you are going to lose all your money eventually, there is no recovery from that, if you wanna gamble martingale then please go ahead and do it but just because your martingale doesn't work do not yell out scam because martingale is a proven not working strategy.