My interpretation of these results is: German households value independence – and physical cash offers three unique forms of independence, which distinguishes it from digital payment 1/8  BIS central bankers' speeches  systems. First, it offers independence from one’s socio-economic background. Cash is tangible and does not require any technical equipment.
At some point, it will be appropriate to slow the rate of increase in interest rates and the case for doing that becomes stronger as the level of interest rates increases.