The data will help me answer the question: "why is Bitmain still using the S19 product line and haven't released a new miner like say S21?"
It won't, miner sales are more related to economics than to technicals, the S19 series still beats almost every other miner in the market efficiency-wise, the only exception would the MicroBT M50s++ and DesiweMiner K10Pro, and both do not have real large manufacturing yet especially the latter, so the S19 series in general especially the Pro and XP is still safe from competition, there is no rush for Bitmain to flood the market with the S21 especially since there are a lot of S19 stocks (a massive chunk of the hydro versions) sitting on the shelves.
