The volatility wasn't "designed into" bitcoin. There wasn't any alternative; how could it have been designed differently? The money supply is permanently capped, and - during these initial decades of price discovery - this leads to extreme volatility

I never thought in my post that Bitcoin’s volatility was designed; it was a way to express Bitcoin’s nature, perhaps mistakenly on my part. But if we open the debate, isn’t it true that the halving of miners’ rewards could be a catalyst for Bitcoin’s volatility? It is clear that the halving of the reward in Proof of Work has a strong impact on price stability.