I think this attitude is just fine because it does not make assumption about what is improvement for a particular language users which you seem to be making. Some user wants improvement ,ok fine, but then what about users whose experience deteriorate after those alleged improvements.
That's not a very good attitude. Some people have to use Go (for work), so it doesn't make sense to just ignore them. If every language had the attitude "It's fine as it is, stop complaining", then languages would never improve!