"Aging" is not necessary. If wood (whether morta or briar) is properly dried after being milled, there's no need to "age" the wood beyond that. A 2" thick block of wood will come to equilibrium with the surrounding environment in 3 years max, and probably quicker than that if it's stored correctly--in a dry spot with good airflow around it. The rule of thumb for air-drying is one year for every inch of thickness plus one year. When morta (bog oak) is retrieved from the bogs, it's pretty waterlogged, and the sawyers set it up to dry either in a kiln or in a shed that allows for good airflow. It seems like 4 years is about the longest that any of it takes to air-dry, and kiln-drying is much quicker. There's no wood on earth that requires 10 years to cure after being cut.
That said, when you move wood from one environment to another, especially if one of those environments is climate-controlled, then it's important to let the wood rest for a while, usually a couple of weeks to a couple of months, in order for the wood to re-acclimate to the new environment. But acclimation doesn't take years.
"Aged" blocks make a good marketing ploy, and I can under the sentimental attraction to an old piece of wood, but a 50-year-old block of wood has no intrinsic advantage over a 5-year-old block that was properly milled and dried.