Archie wrote:

Yes- My Outback grill is.

You don't appear to understand the word "normally" or the word
"porcelain". The overwhelming majority of cast iron grills for barbecue
use are not vitrified enamel, porcelain isn't used at all


Did you try googling for porcelain coated grill?

No, why would I?

This site list several. Maybe they don't understand the word "porcelain".

Most likely. Marketing men talk shit.