BYU’s decision to not join the AAC are the following:
1. Financial/Money
2. Exposure
3. Better scheduling / Opponents
4. Flexibility with no conference exit penalties
5. Geographical, AAC is not close
6. Being counted as a Power 5 opponent (AAC teams are not)
The above reasons are not arrogance. It’s business. You seem to be an anti-BYU personality to bring that up or simply not business minded.