Apparently, anti-nukes count as "anti-nuke walls"

"At least anti-nukes block missiles flying through their coverage, because otherwise using circles to cover the backs of a rectangular map would cost far too much."
- https://store.steampowered.com/news/app/334920/view/4155212770698415116
This should make "modern" defenses far cheaper than we made them before

Additionally, "Zero-K even provides a direct comparison of blockable and unblockable nukes, since its three "true" superweapons cannot be blocked. The cheapest of them costs 4x more than a nuclear silo." That means 3 trinities are about as expensive as a superweapon, or a detriment. (Fun fact, a trinity costs about as much as a paladin, which means paladin + trinity is a valid combo)

"Nukes collide with bodies, so anything with a body can block them. However, they do not collide with allies, since blowing up your own base due to an errant bomber is infuriating, while blowing up the enemy base with a jumping Dirtbag is hilarious. Most units intercept nukes by jumping or flying over the silo right as it launches a missile. Funnelweb is a notable exception, since its shield has enough charge to block a nuke. At least, if by "block" you mean "blow up at a slightly different location". Shields only halt projectiles, they still explode, so area of effect damage is unaffected. This means that a Funnelweb can only ever block one nuke. Still, it is a desperate technique that can mitigate some damage, especially if the Funnelweb is high up or flung into the air."
- A funnelweb can block exactly 1 nuke (at a high cost)

I actually only recebtly realized that we made anti block nukes that overfly them. I remember many, many corner nukes back in the day. I've been building my antinuke to cover corners all these years.