You're attacking a strawman. No one is claiming that you can pull off that multiplier at arbitrary amounts arbitrary amounts of times. And 7 months is plenty of calendar time for those arbitrages to disappear, given the attention on the area and the rapid rate of development. (Warren Buffett can't pull off his early trades now either, doesn't mean he was stupid or grifting in taking early investment.)

So you agree this stuff isn’t useful?