It's an absolute LIE, pure marketing, that old people eat Werthers. Never existed back in the day, when people were old, everyone knows grans and grandpa's sucked on barley sugar...or gums...their gums, not fruit ones.
Now, you've got me wanting a barley sugar for the first time in years and...
Remember he's an older generation and theirs generally had more of a sense of community, neighbourly, home wasn't a place of work, less congested parking etc. And, being elderly, more likely to call a spade a spade and you do sound like you've created a bit of an ongoing mess on his doorstep...