It’s very common nowadays to see people suggest investing into S&P500 ETFs and keep them forever. More then 20% of US population owns stocks. I think we are near a change into this paradigm.
The only difference i'd suggest for people who want to spend 1% more mental capacity is to mix their ETF up so they have global and other-assets exposure.
People like to feel in control, like to gamble, like to be clever, like to know a secret trick. But they are just lying to themselves.
No matter the macroeconomical circumstances, there's no magical risk/return profile that will beat stocks until there's a significant paradigm shift (and no, a minor recession after a period of weird monetary policies isn't it)