But if the government redistributes the wealth to its citizens, wouldn't that boost consumer demand and thereby boost economic growth on the demand side?
[1] https://www.economicshelp.org/blog/glossary/capital-consumpt...
Of course not. However, the original question was about the government redistributing resources from capital ("the wealthy") to consumers, which would have the direct effect of shifting the balance from capital investment to consumption.
The percentage of savings to consumption can go down without the absolute value going down.