It may be true only for the people that have invested ALL their money as a lump sum right before the index crashed (at the worst possible time).
For anybody else, those that say invested in the previous few years into a passive index fund, and continued to invest in the next few years they would have broken even within two years then probably quadrupled their money by today.
Keeping the same amount in a bank would have turned it into 30% less - a decrease similar to what the "crash" would have caused.
It may be true only for the people that have invested ALL their money as a lump sum right before the index crashed (at the worst possible time).
For anybody else, those that say invested in the previous few years into a passive index fund, and continued to invest in the next few years they would have broken even within two years then probably quadrupled their money by today.
Keeping the same amount in a bank would have turned it into 30% less - a decrease similar to what the "crash" would have caused.