The discussions of profiting USD vs BTC are missing the point.

The real question is, does the EMA strategy beat buy-and-hold (i.e., will I have more or less converted BTC after using the bot)? The answer seems to be it depends on the conditions of the market.
During this recent insane rally, I don't see any EMA beating buy-and-hold. Another algorithmic strategy I'm using similarly performed worse than buy-and-hold in this period. I have had success trading half-manually with this bot entering the short position and then manually buying back BTC when I have some gains and I see a trend reversal. EMA has a lag in tracking the trend reversal and the market is moving very fast.

I've been using the bot with close supervision for about 2 weeks and I'm up about 8% in BTC. The largest gain was made by manually buying back during the flash crash two days ago. YMMV.