It feels a little cringe how Elm and the "Elm way of thinking" is so heavily emphasised, but after using Iced, IMO this is probably one of the best gui models without having to implement signals or message passing or IPCs like Dioxus/Tauri does with frontend/backend. Other key advantages Iced has includes daemon mode, native ability to use multi threading and also multi-window support

That said, for actually building most apps, what's more important is likely ease of learning and using the framework, platform/OS support, publishing support, etc, none of which Iced itself directly address.