Oh gosh, I can soooooo relate to this. Neither of my parents work in business but I do and they don't get it but give advice just like your dad's. I just say thank you, then ignore it and do what I think is best, lol. I have learned to not even ask them. I simply tell them now what I am doing. Only you know best since you're in academia and know the industry. Ignore the negativity. Try to filter that out if you can. (((hugs)))