I think that's a great mindset to have and to encourage. My main argument is that "as little as possible" -- especially in Silicon Valley -- is usually much closer to 20% than 10% dilution at seed. E.g. an FTE salary might be $125k-150k/yr, and selling 10% at a $5m cap gives you enough capital for 3-4 people for a year, which is a very small team and very little time to make enough progress to raise a Series A.