You're talking specifically about Blazor client-side framework which is designed for e.g. games or drawing apps where 6mb of downloads isn't particularly onerou

You're talking specifically about Blazor client-side framework which is designed for e.g. games or drawing apps where 6mb of downloads isn't particularly onerous. The far more common use-case is Blazor server-side which doesn't have this huge download overhead and works like server-side rendering in e.g. React, the download is approximately 150kb.