The used ILC market is insanely good over the past few years, I'd strongly argue most interchangeable lens cameras passed the "good enough" point for most types of photography circa 2013. This has meant there is basically a decades worth of "good enough" used gear out there to buy. It's a similar story for video folks; lots of old Black Magic m43 cams available for ridiculous prices on eBay etc etc.

The gains from 2013 to today in the ILC market are much less interesting than 2003-2013 was, where we saw a pretty wild rate of improvement from the Canon 300D/Nikon D70 beginnings of a consumer market through to the modern era of digital SLRs.

My "daily driver" camera (olympus EM-1 MK II) dates from 2013, as one example of this, and still produces great results. The latest iteration of this model is not a quantum leap for most types of photography.