Would 35 year old hardwood sawdust be beneficial to garden ground?

Question

Would adding in the hardwood sawdust raise the nitrogen, or potash.

Answer 1

To use the wood as a soil amendment, the wood should be completely composted, with a dark, crumbly and uniform texture with no recognizable pieces of wood or other materials. Fresh wood mulch ties up nitrogen as it starts to decompose, although it will eventually become a source of nitrogen itself, so it should be aged before applying it around shallow-rooted, young plants.

https://www.gardeningknowhow.com/garden-how-to/mulch/wood-chip-mulch-information.htm