I forgot Lindenwood. Lindenwood might support your point although
@mk80 can speak more to their NCAA D1 hockey addition process. I believe it had been in the works for a while but the ACHA team was not the focal point behind it, but he is probably the most knowledgeable person around for it.
As far as ACHA support for LU, fan support was definitely lacking. it wasn't promoted much and for most of the program's existence they played far off campus (20 minutes without traffic). But the ACHA team was part of the athletic department by way of the Student Life Sports office so there was no hockey related costs for the players, equipment provided, meals and travel paid for on the road, athletic training.
This is the case for a lot of the top ACHA D1 and some of the top D2 level teams where they are treated as a varsity sport, think your teams like Liberty, Maryville, UMary, Navy, Minot State, Indiana Tech, Concordia Ann Arbor, ETBU, etc. Then there are others who operate like much like junior teams where players pay to play and it's funded through boosters, tickets, sponsors, etc. examples of which include UNLV, Illinois State, MO State, Ohio, Iowa State.
Getting back on track the addition of NCAA D1 men's hockey at LU was the result of a combination of 4 factors:
1. The Centene Community Ice Center originally was designed with a USHL team in mind, when that fell through, the Blues and LU partnered, and an $85 million dollar arena got dropped on Lindenwood's doorstep just a few miles from campus.
2. Lindenwood has flirted with it in the past multiple times since 2005, so there's been a desire to do it.
3. Title IX numbers supported the addition.
3. The school president to use a famous term of this thread rubber stamped it.
Obviously the success on ice in the ACHA was good with the 4 National Championships since 2010, numerous nationals runs (we had some good battles with Minot State), consistent top 5 ranking, and if you look around rosters for AHL, ECHL, SPHL FPHL
(maybe not one to brag about), and leagues across Europe you'll see LU had a good track record of moving guys onto to minor pro hockey at a similar success rate of some small NCAA D1 programs already. While all that is good to have when establishing NCAA hockey at an institution, giving recruits some sort of history to show them, it's not really a necessary requirement for a school to add a team. If the right boxes are checked, a suitable arena, funding, Title IX, etc. your team could be 0-100 in the ACHA and it wouldn't matter. I do personally think having the ACHA success provides value by allowing for a better jumping off point for recruiting.
All the recent ACHA to NCAA programs, Penn State, ASU, and LU have replaced most of their rosters quickly upon entering the NCAA. Penn State and LU both brought in NCAA level freshmen the year before their transition, and only a handful of seniors and upper classmen carried into the first NCAA seasons for each. In the case of Penn State they even replaced their coach the year before NCAA, hiring Guy Gadowsky to coach their final year of ACHA and take the team into their NCAA era.