It's far better to have those features well-designed and baked into the language once, then to have them constantly poorly redesigned and baked into every other Go app.
nobody would ever use this argument for the design of C. It’s good for C to stay lean and simple while communities using C (please let’s not with this imaginary monolithic “The Community”) are free to try things and offer competing solutions that others are free to ignore.
kitchen sink languages are bad. Justifying them with “well the community is bad, so we need the bad thing to be mainlined” is maybe worse
By Go standard, all other languages are "kitchen sink". Conversely, I would argue that basics like decent error handling are not in any meaningful sense a "kitchen sink" thing.