Consumer goods are products that people buy and don’t use to make other things that are then sold. We can also call them final goods because when somebody buys them, they have reached their final destination.
That's the definition of an end-user, whether you consider all end-users to be consumers is another matter. I don't think Southwest Airlines is considered a 'consumer' when they buy a new 737MAX, but they are an end-user.
Or a large retail chain buying cash registers or EFTPOS readers.
They don't use them to "make anything, just to enable them to provide a service to their customers.
Is a plumber a "consumer" if he buys equipment to install in a customer's home, discovers it is faulty & requests warranty repair or replacement a consumer or reseller?
What if he is installing it in his own home?
It sounds like "going down the rabbit hole!"
In any case, TE, by definition has no other use than "professional or industrial use".
Much of the "engineering" work done in industry is done by Technicians or Tech Officers, not EEs, so is a hobbyist (currentlyemployed as, or may be employable as, either an EE or Technician) who tests or repairs something with test equipment, even if that thing is not going to be sold on, a "consumer" in the same sense as someone buying an "X-Box".
How about a Physicist or Chemist in a University?(certainly professional)