Fully agree. Mirroring or cross posting apps/bots mean people aren't fully committed to the platform and it's an afterthought. For Nostr to be successful, it needs to be the first and foremost place for content to be posted. If you want to mirror said content to Twitter, that's fine. Hell, I'd probably even use a script or bot that posted content from my Nostr pubkey to my Twitter account and then never check Twitter again on any sort of frequent basis.