Yes, fair enough, many people do not have any savings, which is an important but separate issue. But we are talking here about how people that do have savings use them - and in every case they should invest them rather than leave money sitting in a bank and losing value over time.
One in ten UK adults have absolutely no savings at all, a stat that increases considerably among the younger population. Overall, a quarter of the UK adult population have low financial resilience. Talk about your index trackers all you like, but if you can’t save, you can’t invest.
I agree that is very concerning and should be a priority for the government. But what is also true is that the 90% that do have savings should ALL have a stocks and share ISA as where they can increase the value of their savings year on year