is it the most transacted? And it's share of transactions has gone down (from being the only choice to lots of choices) Largest market cap, yes, but also lots

is it the most transacted? And it's share of transactions has gone down (from being the only choice to lots of choices) Largest market cap, yes, but also lots of probably lost coin. One source shows Tether having the most volume, and it's very energy efficient to make coin out of thin air.