I don't think you read that very well. His response is to Samson Mow (CSO of Blockstream) claiming that Vitalik was "Pivoting to 'Principles are law' from 'Code is law?'". This is because anyone who is even remotely familiar with Ethereum/Vitalik knows how many times Vitalik has said he believes "Code is Law".
Vitalik goes on to defend against Mow's claim that he is "pivoting" by saying that it is indeed a principle. It's extremely clear with basic reading comprehension that Vitalik is claiming that as a principle of his.
Not sure how you extracted the meaning you did. If I'm being honest, you seem to not really be researching the subject in good faith, as a simple google search will turn up many times he's either stated he believes that in text or even video.
You are welcome to believe what you'd like to though, I unfortunately don't have the time to do your research for you, nor do I care to change your mind. So cheers and good luck!