Here's what I'm worried about: The long split can be re-bonded, and sure you can get strong epoxies, but the base wood has been weathered significantly, suffered a fair bit of surface damage from the fitting being dragged across the root, and then there is the bad hole, of course. Seeing all of these things together on the same blade, you have a reduced cross-section of wood, reduced bearing area to support the bolt's pressure on the wood, and reduced material strength due to exposure to the elements. Moisture has entered the core of the blades through the cracks (on either side) and reached the hollow bore.
The structural reason to say goodbye is that wind turbine blades undergo not just radial load, but thrust. That thrust is like an airplane propellor, it just pulls backward, not forward. On a Jake it's probably 300 pounds or so in a really strong wind. The thrust pressure is spread along the blades, it bends them back a little. If you were to put that cracked blade back on the shaft, and press back, you would see the cracks spread open. Thrust loads will encourage the glue joint to open up. Even with the root fittings clamping it together, the cracks extend way out the span, and I think the axles do too.
Even if you fix the crack now, there is still a load on it, so you have a fatigue mechanism that will just find a new (parallel) path to crack again.
Sorry.