I remember when we lived in Cucamonga(now “RANCHO” Cucamonga), Southern California, we had an incinerator. Hell, every house in the whole development had one.

This is ancient history of course. Now in a different situation, we have a burnpile after giving up on the burnbarrel. It was inefficient and lasted one/two season at most. We definitely have restrictions as to when you can burn and no toxic/noxious items.
My COPD has let our burnpile exceed our wishes, like with two Xmas trees in there.