Yes, anything that makes energy more affordable is a win. Mining is somewhat special as it's one if the most competitive industries worldwide, and the idea that low income people can benefit under such extreme conditions is at least courageous. Even if electricity was free, the economics of ASIC prices and diff adjustments is too complicated for most to create positions yield. That yield would effectively be the subsidy to electricity. Since that yield is likely negative, so is the subsidy ¯\_(ツ)_/¯
Discussion
Policy is challenging as there are so many intersecting issues. If gov should be tech agnostic, but many aren't in the case of mining. They're picking winners and lovers but have a bad record of it. Need to look at bigger picture, especially if a tech can assist with multiple policy mandates (eg low carbon and energy poverty)
My idea of good policy is "as little policy as possible". Makes life hard for some, for a while, but that sorts itself out over time. Assuming the state's responsibility is "to enable the wellbeing of everyone" like we do in the EU, is bound to fail.
Need to hit the bed now, good night.