EE is actually a good place to be. Hopf algebras are like LTIs. There's a Laplace transform/z-transform relationship between the unit impulse path and the convolution path.
I think the person you are replying to is talking about the naming of the title. Transformers, electrically, are used to change voltages and work by electromagnetic induction. I was super confused by it also since it has to do with machine learning and not electrical applications.