No, it doesn't. Size of application can correlate strongly with complexity and thus number of queries to the server, but there is nothing that dictates a 1.44MB+ HTML5 application ever even touches a server.
There are many reasons to want small files, but scaling isn't one of them.
If you want to scale, you'll have to reach me at some point and you won't reach me with a huge app that takes me 30 seconds to load.