You're not connecting to 400 relays all at once. You have a pool of 400 relays. Your anger is misallocated because you don't understand what's actually happening. When you post, you are still only posting to your relays in your list. Which is only a few. You don't understand nostr. It's that simple.

Would the client be better if it just had a relay pool of hundreds and just didn't tell you. Because that's how all clients with outbox model are working... Which is probably other clients you're using... But you wanted something to bitch about like an immature adolescent.