I don't know if it is a good point to call Mithril "better" than React just because it has some utility built in... I don't want to say that Mithril couldn't be "better", but the points listed in this article don't seem very convincing.
Wouldn't this impact the size of the browser itself alot over time? Let's say after 5 years of existance when many new useful features were added? And would there also be sort of a committee like the TC39 (just to get the idea right)?