If it just makes implementing languages with decent performance and good GC easier, then it has benefited us tremendously. If it can additionally free a language developer from the hurdle of "there's not that many libraries yet" then this is also a good thing.
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This guy seems to agree with you: http://news.ycombinator.com/item?id=662553 ;)
In the big picture I don't know if something like that matters as much as sharing a lot of advanced VM techniques.
If it just makes implementing languages with decent performance and good GC easier, then it has benefited us tremendously. If it can additionally free a language developer from the hurdle of "there's not that many libraries yet" then this is also a good thing.