Now I wonder whether Google was misunderstood with the "2048-bit keys" or they did it on purpose to push everyone to use RSA. Why didn't they suggest ECDHE, too

Now I wonder whether Google was misunderstood with the "2048-bit keys" or they did it on purpose to push everyone to use RSA. Why didn't they suggest ECDHE, too? Why push everyone to usa RSA now, just to tell them to use something else a few years later?