yes.
if you are making distillate from BHO, and it’s good enough that you don’t need to winterize, you’ve left too much behind in the biomass.
if your goal is to make distillate, then using ethanol as your primary extraction solvent makes more sense than using CO2 (imo), and in most cases it also makes better sense than using butane/propane.
if what you’ve got is a source of crude, then winterize. if you’re also making the crude, sitting down and looking at the cost/logistics of making that crude with ethanol is likely worthwhile.