I disagree because I've seen some readable Go codebases but I wholly agree that bad Go codebases are a nightmare.

Try comparing the Honk source (clear, direct, modulo the unangst wacky names for everything) with GotoSocial (unreadable, interfaces and abstractions out the wazoo).

(Yes, I know GTS supports the MastoAPI but that doesn't force the hellish onion-layer abomination they've created.)