What is wrong with email exactly? You'd prefer we all use Shitcord instead I presume?
It's non-real-time. It sits in a box waiting for you. You're not incentivized to be in a place to get messages for fear of missing them. You don't have to scroll through unrelated crap. It's federated which means no single company can dominate it. You can use whatever app you like to download and send messages over standardized protocols so you can't be forced to view ads or spied on. Yeah it's not encrypted meaningfully (provider to provider with the NSA sitting on both ends listening) but what is that is in mainstream usage? It can be encrypted with plugins.
So where do you get off insulting email? What's your alternative that is superior and meets the same needs?
They could be deliberately planted war propaganda by the west to mislead Iran into thinking they're weaker than they are.