So you get all the benefits of a tomahawk without the million dollar cost. Thats a huge innovation.
Except you don't. Missiles like Tomahawk and Kalibr have proven to be, to this very day, incredibly difficult to deal with. Ukrainistans claims of 1000000 downed Kalibrs and 158% interception rates are not to be taken seriously.
Such subsonic cruise missiles are versatile thanks to their compact nature, they travel at the upper end of the subsonic speed range, which comfortably let's them bypass various kinds of guided and unguided anti-air systems, unlike the extremely slow flying Shahed/Geranium/Lucas which are even vulnerable to helicopters and AA guns. Not only that, such missiles feature more robust countermeasures, but also higher quality guidance systems as well as a multitude of countermeasures. They're higher cost, but still not approaching the cost of supersonic or hypersonic cruise missiles, they carry a large warhead and can be containerized for usage on the majority of warships in their given Navy.
These long range drones are nifty and have their place in modern warfare, Iran and Russia demonstrated as such (especially as decoys to expose and deplete SAM systems), but claiming they're comparable, let alone better than subsonic cruise missiles is bordering on lunacy. You make it sound like they're nerf darts that can be caught with your hand, when they travel extremely quick, fly extremely low, carry large warheads, maneuver and are packed with redundant guidance and countermeasures. These are two kinds of weapons meant for very different things with very different advantages. Just because they both deliver an explosive warhead from point A to point B doesn't mean they're comparable. Or do you compare Concorde with a C-17 because both move people around?