Are you stopped consuming animal products? Have you stopped consuming plastics? Have you sold your car? Have you stopped flying? Have you divested from companies that do those things? Then how is it all Grandma's fault?
Sophistry and ad hominems provide poor cover. It's just intended to manipulate your own feelings, and avoid unpleasant thoughts you don't wish to process.
I stopped consuming animal products nearly 20 years ago. The last time I owned a car was 15 years ago. I go shopping with a backpack and put food packaging into recycling bins. Many products I choose to buy have a organic and fair trade certificate and are not owned by pepsico or nestlé.
I fly long distance about once a year. Trains for short distance.