That’s a really good point Will. Spreading work out across a wider head. Most often I read post they say I don’t buy 16 inch wide boards only 6 or 7 inches wide so why would I need a 16 inch wide head.
The answer is you can spread out the work,bigger diameter heads produce a better finish.
The feed pressure from a insert head is not something trivial.
I speak now from my experience I use my jointer in the same way as Will. I go months with excellent cuts from my machine that has a 5 inch cutting circle. I also enjoy sitting in my chair while facing lumber mostly just the weight of the stock is enough downward pressure. My job is moving wood left to right. When the boards start needing pressure it’s time to take them out and sharpen them. Or wett them off the infeed table.
A insert head in a hand feed machine not me never again.