There's a lot of relays for the "them" to tear down. Say they come close, the blastr's can be turned on.

They can't take down tor only relays. No doubt they've been aiming to take down Dread on tor for years.

Nostr's not under such an attack but the second there's a hint of fear, relays go tor only and onion urls are spread around.

Media links are the main point of failure we still have. Not sure why there's little attention in this regard.