The problem is the carry over cooking. If the white meat is already 165 when you pull it from the smoker, it's going to easily be over 170, upwards to 175 after the rest. It's edible at that temp, especially if you brined it, but it's not going to be as good as it could be.If someone wants to flirt with medium rare turkey, it's a free country. As for me and my house...
All poultry: Cook poultry (ground or whole) to an internal temperature of 165 F as measured with a food thermometer. https://www.usda.gov/media/blog/2022/10/03/cooking-meat-it-done-yet
Pulling it between 155 no more than 160 will still have it at 165 when you are ready to carve it up. I promise you it will not seem the least bit undercooked.
The dark meat will be fine, you just have to monitor the white meat. When I do it the dark meat around 175-180.
All this applies for chicken as well.