I think most lifeforms will have more pressing matters than wasting large amounts of time an energy blasting signals in to space for no reason, or listening to the sky.
Maybe those civilizations that waste more energy chasing aliens die off sooner due to wasting resources on sci-fi bullshit and ignoring their real problems at home.
Intelligence is a very loaded word and not very precise in general usage. And i mean that amongst humans and animals as well as robots.
I’m sure the real AI and compsci researchers have precise terms and taxonomies for it and ways to measure it, but the word itself, in the hands of marketing people and the general population as an audience . . . not useful.