Yes, stretching is a drawback but usually in a daily driver the timing change is negligible. In rare cases I've heard of them actually jumping a tooth. But that is in a neglected vehicle with many hundreds of thousands of miles on it. Still, whenever I do a rebuild I use a quality double roller chain just to get that extra.

I kind of like gear drives on street machines because it sounds like you have a blower stuffed under the hood. Makes people wonder.