Scientific studies haven’t really been done on the effects of how THC behaves when it comes in contact with ethanol alcohol, but alcohols are polar, meaning they will generally weaken cannabis by dissolving THC, terpenes, and other cannabis compounds, more so than water.
Ultimately, you’re ruining what the cannabis is. The terpene profile will get completely overshadowed because all you’re going to have is the flavor of the alcohol. If you have rum in there, the majority of what you’re going to taste is the rum.
He went on to explain that terpenes add to the experience of a high and destroying them would likely diminish your high. THC potency would also be reduced.