Programming languages are tools, not religions. If a project like this can help people use and understand their tools that is a good thing. Reacting as if the infidel language is defiling the sacred is absurd and indefensible from a practical standpoint.
Well yes... unless you realize that ours is a fashion-driven industry, where technical choices are not made based on technical merits but via a popularity contest. From a practical standpoint, complaining about propagation of bad choices is absolutely defensible.
Or, to put in another way: today you don't complain about crap tech pushing out good tech, tomorrow half of the jobs in your field require you work with the crap tech.