'The earliest citation I’ve found is from a June 25, 2023, Urban Dictionary entry: “the current period of human history in which people in power tend to be assholes.”'
I found a 17th February 2014:
“Paleontologists of SFWA will one day refer to this as the Assholocene Era … ”
LB: #assholocene has a nice ring to it. It may not take off as quickly as #enshitification, but I think it's here to stay as a hallmark of our current global state of affairs.