"When mining ores from the fungal core using Tagga’s Core Hammer, you’ll have the chance to receive Deathspore Arrowtips.
The higher tier of ore, the higher the chance to get Arrowtips – and the more you’ll get!
To me it definitely looks like we can mine any tier of ore to have a chance to get the new arrowtips, so the people "in the knows" should have no reason to just buy dark animica stones spirits but not all the others.
SlRsaid: 15th September (exactly 1 week before the Twitch stream) is when Dark Animica Stone Spirits started going up for seemingly no reason. I don't know about Elder Logs though, I don't follow them on the G/E (I wonder if they were already going up pre announcement too). May have to check the G/E graph from Sept 15th and see if there is a correlation.
Again, why aren't other stone spirits going up with your conspiracy theory?
Why don't you look at the GE graph now and can easily see elder logs have been going up even if you just look at their prices from Sept 15 and onward (from 9,782 to 10,293).