I have seen it, not recently though. I honestly wouldn’t have a problem with it. You have control over his matched opponent, right? So you could make sure it was a competitive fight. The only issue would be if they had someone else “in charge” that you could get whatever decision(s) from if needeed.
I fought on many events that I promoted, either out of necessity (no show) or just to save money.
If that’s your stupidest question of the year, you’re lucky!