Not true; look at Type 90 and Type 90 (B) being the foldered as the only Rank VIIs on their line, TKX and Type 10 being foldered as the only Rank VIIIs, etc.
Didn’t HMS Repulse get x8 20mm Oerlikon AA guns in real life in her 1941 refit? In game we have x6 but sources tell me x8 and I’m so confused