It’s not feasible for a mass market consumer product like Starlink.

Why not? That’s a service designed to serve millions of simultaneous users from nearly 10,000 satellites. These systems have to be designed to be at least somewhat resistant to unintentional interference, which means it is usually quite resistant to intentional jamming.

Any modern RF protocol is going to use multiple frequencies, timing slots, and physical locations in three dimensional space.

And so the reports out of Iran is that Starlink service is degraded in places but not fully blocked. It’s a cat and mouse game out there.