I asked a prof who was in charge of grad admissions at my school, and they didn't seem to think it was worth sending to GRE optional schools. Most adcoms didn't take GRE scores very seriously preCOVID, and it will be even less valuable now that not everyone will have that data point. I only ended up sending them to the three or so schools that required them. Probably best to save the money or spend it applying to another school or two.