Its not aimed towards fullstack anyway. You CAN write webapps, and leptos is an amazing tool! But developing in leptos is a huge bottleneck. It takes to build than angular, and that says enough
I love Rust for embedded and building PC applications, but don't use it in this domain due to the lack rich frameworks. Ie that have DB ORM (Like Django or SQLAlchemy vice Diesel), auth, email, security, admin, templating etc. On the plus side, Rust has serialization and timezones down with best-in-class solution via Serde and Chrono .