I guess my premise is that I don't think we have a useful enough definition of intelligence because the ones I see people writing articles on seem to be dependent or defined by agency, and specifically humanish forms of agency. So I guess your point would be "these systems aren't intelligent, but that's not relevant"? I suppose I out the issue at the currency of the definition of intelligence. It's seemed to be very much synonymous with "how humans do things", making it somewhat impossible to give charity to the arguments presented in this paper with the caveats on "not anthropomorphising". Like I can't compare these two things if your definition of intelligence is fundementally based on what "Anthros" do or do not do and simultaneously not engage in anthropromorism.
To follow on your point, if these things aren't displaying "intelligence", but that's also not the point, what then are they displaying?
It seems to me this is a failure of introspection on the part of AI philosophy to recognize how limited our understanding of "HI" is.