i also thought the same when i came across this method, it looked to good to be true until i started doing it myself!
WARNING - it is EXTREMELY risky if you start to cost average - large drawdowns for sustained periods are inevitable
the entry is purely subjective simply based on an over extension from ema9, looking for some PA to enter countertrend, mainly wicks, then cost averaging until it reverses, using return to ema's and PA for targets
the bits in yellow are visually obvious entry points for countertrend - the question mark is not, it is still very close to the ema's, an entry here would be based on other factors like previous resistance