I guess, therefore, even though I bought last-gen cards, I see why
@bigboxes said that I was part of the problem.
My farm is mostly GTX 1660 Super/Ti and RX 5700/XT cards. A couple of RX 5600XT and GTX 1650 too.
I had sold / gave away most of my prior cards, like my Polaris cards. (I didn't understand under-volting at the time, so I mistakenly believed that Polaris cards were in-efficient.)
Edit: Important note!
Although I ratcheted up the hyperbole to make an arguement, I harbor no ill will towards bigboxes, and I ask that you all do the same. Don't read the prior and decide to "take sides" please. I don't mean to diminish bigboxes's good reputation in any way due to our heated exchange either.
In fact, we just virtually shared a drink. So, he good, I good, and readers should be too.