As of August 2022, published estimates of the total global electricity usage for crypto-assets are between 120 and 240 billion kilowatt-hours per year, a range that exceeds the total annual electricity usage of many individual countries, such as Argentina or Australia.[2]
Then again, the US is the third most populous country in the world with a population of 330 million. It's also second in yearly electricity consumption globally after China (4 million GWh vs 8 million GWh).[3]
In that regard, your equivalence is false. Sure, dryers clearly use up a ton of electricity and it's perfectly reasonable to question the value of having your clothes dried by an electrical machine. Then again, clearly crypto uses a ton of electricity as well, while you could equally argue that there are clear alternatives, which don't require all of that just to be able to have a means of payment.
Of course, the meta discussion being that laundry drying machines have a clear marketable value and direct use to the vast majority of the U.S population, whereas with cryptocurrencies, the vote is very much still out there.
[1] https://www.reuters.com/business/energy/us-power-use-rise-20... [2] https://www.whitehouse.gov/wp-content/uploads/2022/09/09-202... [3] https://en.wikipedia.org/wiki/List_of_countries_by_electrici...
- dry produce - fruits, mushrooms etc.
- partially heat the second floor. The house is well-insulated so this relatively small amount of heat - the whole rig pulls around 300W - is often enough to keep the temperature above 15°C which is enough for the use we make of it.