Since we're talking about politician, i expect he mention Bitcoin since it's most popular cryptocurrency where he aim to to gather support/vote. Besides, there aren't many popular PoW cryptocurrency these days.
Cruz talks about Bitcoin because it is logical coming from someone with his political ideology. Who is going to defend Bitcoin the most? Someone who believes that the state is the best guarantor of rights and freedoms, or someone like Cruz who believes that the best guarantor are self-organizing individuals? Like De Santis or Bukele. W
hat is paradoxical is someone from the Democratic Party defending Bitcoin, which was created precisely to escape the clutches of states and central banks.
Look at those who defend how bad Bitcoin mining is:
Bitcoin is next climate fight for Democrats
‘Just imagine the climate’: Bitcoin in crosshairs as Democrats target crypto mining in green energy push
Bitcoiners Protest Democrats’ ‘Misleading’ Letter Sent to EPA