I dunno.
All I know is I dont give a hoot if red onions pollute! LoL
We lost the last burger joint in town that still used them recently.
They had been around since the 40’s and used to have car shows..
Sigh...
I know how that feels. Sorta. My beloved cousins and aunt/uncle 200mi from us in the hinterlands used to have a Dairy Queen near them (we NEVER have had a close DQ). DQ left but someone took over the place locally and called it Dairy Dip, so the deliciosity continued. For a while. They had car nights, too (I’m a car nut). Then they closed; it’s been 15-20 years. No more wonderful soft ice cream up there.