One benefit to this idea: for a relatively inexperienced coach, low-level D1 is going to be more forgiving than D3 will be, for at least two reasons.
D1 scouting budget is big enough that if you waste some money on a "learning experience," you still have enough left over to find some good players. At D3, one mistake in your scouting budget might cripple your recruiting efforts that season.
D1 can jump right in on recruits. In D2/D3 right now, the key to success is to put out some nibbles on D1 guys, see who falls through the cracks and then pounce in the second session. A brand new coach isn't going to know to do that, will spend all of their time/money recruiting D3 players in the first session and end up in a cycle of mediocrity. At low-level D1, they can identify and pursue high potential guys right away.
In some ways, this game is backwards from most games. In most games, you start at the most forgiving level (in terms of resources, ability to recover from mistakes and need for high-level strategy) and then work your way into unforgiving territory. It's the opposite here. Right now, a D3 coach has to carefully manage resources and strategy much more than a low-level D1 coach does.