Yes
This is a good way to introduce our community. It may not be as effective as e.g. our blogthe Hot Network Questions (for example), but if anyone happens to be on SE Chat accross the network, they will be more likely to see the Nineteenth Byte (and hopefully join CGCC).
An event idea: Esolang Showcase
While on main "challenges that require the answers to be in a specific language are generally discouraged", in an esolang showcase event chatters could solve simple challenges like "Hello World" or "Fizz Buzz" in a predetermined language someone wishes to share.