Your idea of what denotes alternative process is restricted to film. I take alternative to mean anything except a negative positive print. A salt print viewed on a computer is a digital image. How can it be otherwise?
I'll tell you how. The term Alternative Process was determined when Film was the only, and therefore dominant, method in the craft.
Everything else was alternative. No more. While film devotes may have a 70-year habit of referring to Alternative Process as not being the dominant method; film; that day is over. It will just take years for the film folk, and the general public, to accept that.
Few people think of Cell phone imaging as photography; its just fun, sa way of sharing thoughts, or a record. Hollywood, when they want to show photography, show a fashion shoot or a darkroom or moody BW prints. It has romantic resonance to the 50s and 60s in the lives of our population. So what else are they to think?
In 10-15 years the school catalogue will show all film-related processes as Alternative Processes. Why so long? To the general public photography still means film. I get this from my administrators. It took a while to realize this. Now I go into their offices with my FM2 and my Fujifilm X100T, ask them to take a shot, then ask them which one is in focus, properly exposed, or if the background is clean. You can see the lightbulb go on. I tell them, "not only is this why Pros use digital capture but it is a superior teaching instrument with its short learning loop." They get it; they just didn't know.
In our academic Pro program the Electives, our entry-level Beginning film class joins Intermediate Darkroom and Alternative processes, are now grouped as a special certificate. Get ready for film as an Alternative process.