It can also be like other things, but it _is_ (or can be and often is) engineering.
I will fight those who say otherwise and I have citations to prove it.
It doesn't resemble modern structural engineering as it is practiced in the United States after 1950 or so. Agreed.
But engineering involves so so many more disciplines than structural engineering, and especially more than "structural engineering in the US post 1950."
@hrefna reminds me of an old housemate (piano tech by profession) who hates that people used "tool" to refer to anything non physical.