Justice Brennan and Justice Marshall remained on the USSC for two years after everyone involved knew they should have resigned. That was as recently as the ‘90s, and there are plenty more worse historical examples.
There are many cases of justices being absent for long periods due to health, and for holding onto the seat long after everyone knew they should quit.
Ruthie has only been out a few months, and seems to be participating. Not yet a crisis at all by past Supreme Court standards.
Seems to be participating?
Right......