> Raids would be necessary to destroy any buried weapons, but these troops wouldn't need to stay there.

Shaheds can be launched from trucks from inside densely populated cities. Good luck with those raids.

> Eventually, because they don't have an industrial base and cannot effectively replenish their stocks

Modern drones are cheap and easy to assemble, Iran's allies (Russia, China) can easily smuggle them inside country.

The win condition is not zero Shahed attacks, the win condition is to open the strait.