The interesting part of this advice: index funds will probably include Starlink, Tesla, Apple, Amazon, Meta and Microsoft etc.
While "index fund" sounds plain and boring, it's an inplicit vote for the status quo and binding one's fortune to the current market leaders, effectively supporting them.
My understanding is that index funds adapt they rebalance shares mlby market value and add or drop companies. Sure they might miss out on some rapid movement from nothing but they'll add that company in next quarter.
They're a vote that you think the economy as a whole (us, eu, worldwide) will go up not that particular companies will go up.
Of course if some political figures succeeded in destroying things there may be a large recession in which case index funds may do badly for a couple of years but if you think there will eventually be a recovery and end up higher then its still worth it.
> They're a vote that you think the economy as a whole (us, eu, worldwide) will go up not that particular companies will go up.
That's the sales pitch.
The other side of the coin is any company that is influencial enough to bring part of the market down if it fails will also hold index funds as hostages. The more index funds are chosen the more "too big to fail" companies impact people's savings as a whole.
Whatever you think of the next behemoth being caught red handed doing something egregiously criminal, it's survival will be partly guaranteed by index funds.
While "index fund" sounds plain and boring, it's an inplicit vote for the status quo and binding one's fortune to the current market leaders, effectively supporting them.