While I'm sure people have, I think it's very risky. The winds there can come up suddenly, you are surrounded by grasses. If it's too dry a fire could easily start and spread.
I don’t know if this is technically allowed because the grass is extremely dry but multiple people around us made their own fire pits from stones to have small fires- we did and it was fine, but be extremely careful if you do! There are no fire pits already made here.