There is as much a link between foil and Alzheimer's as there is between vaccines and autism.. And in case you're wondering that link is zero. There is no evidence outside of crazy debunked scientists looking for money
The reason I use butcher paper and the reason I think you should as well is because unlike foil it doesn't hold in the moisture and steam your bark, it wicks away the moisture and slows the evaporative cooling, so you can power through the stall and keep your bark intact. I personally get the most repeatable success from wrapping with butcher paper after the bark gets the color I like. Generally that happens shortly after the stall begins.