Most places have little to nothing in the way of AA defence.
Especially civilian infrastructure.
If Iran has enough stockpiles, this will be 'not good' and they could play an ugly asymmetric game here.
People get upset when their water doesn't run, or the shopping mall is hit by drones, toilet won't flush. Etc.
Middle east summer without working running water, electricity for aircon, water desalination etc would indeed be be "ugly, not good".
One of Ukraine's successful tactics is damaging their opponent's petroleum processing and export facilities with "cheap drones", to deny them income. These facilities are very flammable if you try. That tactic would translate exactly.