I would hardly call dives free. There’s still an element of danger, being way into the enemy’s base, and also having to deal with fort fire. There’s a definite risk to it, so I’m not buying the argument. If you get behind your wall, that’s most often enough to be safe.
It’s weird how some people look at this. If I get dived on and get killed, I don’t think my towers are useless, I just admire that the enemy was willing to take a risk and give them kudos because a fair amount of times it doesn’t work and they die.