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Scala's runtime also disqualifies it from anything but toy projects on Android (something like 50k methods). This document goes in greater details:

https://docs.google.com/document/d/1ReS3ep-hjxWA8kZi0YqDbEhC...

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Isn't it fairly easy to slim down the runtime at build time to only the methods you're using? I was under the impression that this was possible, though I've never actually done it so what do I know....

Yes, it is. This is commonly accomplished with a tool called ProGuard. Doing this comes with some other trade offs but it is easy to do.

Just because they didn't do their research doesn't mean it's not a no-brainer.

> it requires build complexity

All languages benefit from not having to deploy their standard library on every iteration, not only Scala.

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