Is 5MB a real problems? Theoretically it may look big, but I have seen many websites much bigger, not to mention all video/image we download are already skewing download by a lot. Considering runtime is cached for long time, I don't see a real blocker. First page render would be an issue but SSR solves that.
Well if you want to make small fast loading html pages with a minimal js library, and end up at a few hundred KB that you can understand, profile and optimize, then that is impossible with blazor. So it's a very real problem.
If you want 5mb blobs and do not care about what is going on inside, how to optimize or reduce the memory and bandwidth usage, then it's not a problem, works just as well as the websites you have seen, with 200 node dependencies.
