A discord user coincidentally posted this a couple hours earlier, so it seems kamikaze attacks are working properly.
No idea how effective they are, though.
I was the one who posted it. I got attacked by several waves of kamikaze strikes, but most were downed by AA and the rest missed. I'm not sure the damage they could've caused if they hit, but it seems they can be countered by late game AA.
“Build few, and build fast! Each one better than the last!”