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This. The numbers just don't add up in order for this to make any sense.

$100 is plausible though, and if you had some outdated mining hardware (still likely to be single use ASIC hashing setups rather than computers) along with a lack of morals/ethics, then I can see it happening for sure.

Not really. Maybe not $100k, but there is definitely a good profit range here. You can buy Asics today that give you 3 to 4 Dollars per kWh (not BTC obviously since that is way less profitable). If you assume that the price of electricity was average for the US (~15c/kWh), a $1500 monthly bill means roughly 10,000kWh. That would be 30k-40k Dollars in crypto. Even more if they were early.

The problem is that these Asics make Nvidia enterprise card prices look reasonable. So only super cash loaded people can profit from that right now.