They did back when I was a sheety, we made them all the time. Perhaps two industries using the same word to mean different things. I can totally see why a weed grower might require a sheetmetal bulkhead that I used to make. Installed quite a few with sketchy excuses for the need for one. I knew what they really needed it for. I'm not confused. All three of us seem to believe that a bulkhead has one meaning.
OP, for not being specific, Me, for offering input on a second meaning of the word, and You, for incorrectly telling me that I'm confused. I've learned something, at least.