So is the theory that low returns on savings will get the boomers spending again?

One of the articles i read reporting on the IMF blog was a little blunt saying the opposite. "Its not about the Boomers, they have had their day"
That is another reason why being a boomer is good - you can ignore all of these juvenile hipster “experts” and do your own thing undeterred as usual

We have learnt that no amount of speculation and hypothesizing about the future is worth the paper it's written on

there will always be another 911 or Ukraine....which jumps out and stops the world or another SARS variant to name but a few recent ones, oh did I mention Liz Truss.