What is the value of buying older houses to House Hack?

[Pranav Chunduru]

I heard that it is better "dollar-for-dollar" value to buy older houses when looking to House Hack. I don't get this. The phrase "dollar for dollar" is a little confusing, and I don't know why one would prefer an older house. Wouldn't that mean more maintenance costs in the future? Especially if you are looking to rent out the house for a long period of time after you leave.