They have 5G radios in them, IIRC. Of course there's crackpot theories about the RF.
(In fact, I'm pretty sure the reason I know that smart meters use 5G is because of the crackpot theories about "smart meters use 5G, and we all know what that does!!11One!".
(In fact, I'm pretty sure the reason I know that smart meters use 5G is because of the crackpot theories about "smart meters use 5G, and we all know what that does!!11One!".