Neighbors up to something?

Maybe someone can help me here. I'm assuming this is drug related but I'm ignorant on a lot of that so I'm unsure.

My neighbor keeps burning brush piles near his carport. The carport tucks around behind the house so you can't see from the street and I can't normally see because of the fence, but I've gotten nosy because it's happening a lot recently (or maybe I'm noticing more being home with Corona) and it's a very odd location for a brush pile. He doesn't keep up with his yard at all so even the idea of him burning leaves/grass clippings seems odd. Today I peaked over the fence and he has folding tables turned on their side on three sides of the burning brush pile, the shared fence serves as the fourth side.

Do meth cookers ever burn a brush pile to disguise the smell of cooking meth? I can't think of any other reason why a brush pile would be burned so close to ones house.