I bought a XFX RX 580 that was used for cryptomining from eBay, used it for 3 years then handed it down to my son who used it for 2 more. It still worked when he removed it. Can confirm.
Likewise for the 1060, its still going strong. I upgraded to a 3060 round about the time my younger brother decided he wanted a PC so he is now using it without any issues. About 10 years use out of it, plenty more to go.
GPUs are pretty damn resilient if you aren't pissing around with them.