I'm more on the line of your way of thinking. It's his car, his money, he can do what he wants with it. But, I also think an LS engine is boring. Don't get me wrong, if I had a Nova, I'd probably go that route, but not really a Mopar. The reason why I think it's boring is because it doesn't really change the dynamic of the car all that much. It's still a V8 which they offered in an A-body anyway. Sure, if it's turbo'ed it'll be a tad cooler and different, but still, it will feel like any other turbo charged V8. So, to me, I don't really see the purpose of an LS swap in a Mopar or A-body. In the long run, I don't think it's all that cheaper and it require more modification because the LS platform was never intended for a Mopar and not many people do it. However, if LS engines is what you know it could be more beneficial.
Going back to changing the dynamics of a car, what I mean by that is putting an engine in a car it was not designed for. For instance, LS swap in a 240SX or RX7, totally cool. It has a completely different feel than a turbo 4 or a rotary. We've had members here who are/have done an SRT4 swap, 2JZ swap, and I think one successfully swapped in an RB25DET. I think that's cool. It's just different enough to peak my interest and, again, change the dynamics of the car.