Because renewable energy can be cheaper.
Selling it at any price does not mean that it is the cheapest at all, and electricity is not the only factor in mining, there is temperature, location, customs duties, .... etc. Electricity production licenses will encourage miners to change the place if accompanied by more measures, but what happens is that miners build the infrastructure for renewable energies and not exploit the surplus.
It is much more sustainable, although of course not as cheap as mining using non-renewable energy sources.
Who will bear the cost of recycling? Renewable energies have many negative aspects that have not yet been addressed, and the life span of many mining farms is the next havling.
asics farms have preferred hydro due to.. obviously. constant water-flow
This may be a convincing reason, so the news that talks about the use of solar energy are the result of these press reports?
It's green washing. Miners feel that they have to explicitly state that they are using renewable or green energy because the media focuses on that too much.
Is this reason enough to use renewable energies? What will it benefit them if the media attacks them or stops it?