Salads are just cold foods chopped up and mixed together with some kind of dressing. I.e. fruit salad, caprese salad, egg/chicken/tuna salad, etc.
Using gelatin as the “dressing” is a regional thing. This would be called strawberry cumfart jello here, not strawberry cumfart salad.
I also think only very old people still eat this shit. Gelatin in general is much less popular among young people, who want their food to vaguely resemble food.