Why should a language be novel? If you have to hang something on the wall, are you going to discard screws and plugs because they've been around for quite some time?
Go is good enough. It has some short-comings. I'd like to see non-nullable types, even though I haven't had a memfault in ages. But it's easy to write it, runs fast, is memory efficient, and runs practically everywhere without a fuss. For normal software, that's such a big plus. I'd hate to have to go back to Java.
