And more specifically, it's not low growth/high inflation that kills bond portfolio returns, it's interest rates increasing that devalue bonds, i.e. the transition from low inflation to high inflation. So yeah, you can construct a portfolio that hedges against that... but I'd be surprised if you can do it without decreasing your risk-adjusted expected returns below a plain stock/bond index fund - whatever hedging method you use is either going to increase your interest-rate risk (bonds), or your inflation-rate risk (cash), or is going to limit your upside (buffer etfs), or is just going sap your upfront returns (protective puts).
To me the diversification hedge options (say GUNR) seem like they are helping you get closer to regime neutral. Or in other words you are giving up returns to cover more macro scenarios and betting less on what the future looks like.
It's effectively impossible to hedge against every possibility, including temporary drawdowns, while still having positive returns after inflation.
No. With insider information.