Why does he hate his mum so much? Rotary phone for an 80yo is like having a guillotine for fingers. I am still in my 40s and I DO NOT WANT to use a rotary phone

Why does he hate his mum so much? Rotary phone for an 80yo is like having a guillotine for fingers. I am still in my 40s and I DO NOT WANT to use a rotary phone ever again.