One of the first things to go with dementia is your "filter" - that whole social grace thing where you don't say stuff that you're thinking (because you want to be nice) sometimes goes out the window. With my Mom, that was certainly true at times.
So yeah, she really hated your music, but a decade younger, she probably wouldn't have said it.
Maybe I can claim that for special consideration from the mods
when I occasionally go off the chain.
