Phage can pack host DNA into their capsid which can promotes the spread of antibiotic resistance genes.
I've heard about that, thanks for pointing that out.
It can get quite complex when you begin to consider a main mechanism in antibiotic resistance: information flow between other species of bacteria (horizontal gene transfer) + Viruses as significant boosters in evolution with their superpower in living systems to "easily" modify/add huge chunks of DNA/RNA.
They actually help us (Eukaryotes, broadly) a lot in containing the spread of bacteria. Maybe in the future our only help in dealing with multi-resistant ones (because of our mindless use of antibiotics), which in comparison is a more scaring prospect - several orders of magnitude higher - than this novel type of human betacoronavirus meticulously detected by millions of non-standardized (temperature (annealing, denaturation), number of gen-sequences, # of cycles) RT-PCR-Tests daily, worlwide ...