It is fairly common. They probably aren't code splitting/tree shaking their bundle very well. With that said, I assume 99.99% of their user sessions come from

It is fairly common. They probably aren't code splitting/tree shaking their bundle very well. With that said, I assume 99.99% of their user sessions come from a desktop computer, so I doubt hardly anyone notices. They have other things to work on that are more important than optimizing their 4mb app.js script.