Tech Descriptions Contradictions: A bug?

[SnowFire]

Not really a bug, but definitely a contradiction. Examine the following
line from techlongs.txt on Synthetic Fossil Fuels:

"The extreme efficiency with which the neural net
fungus managed Planet's vast ecosystem kept extensive
deposits of organic material from forming over the epochs.
Because of this lack, the fossil fuels known on Earth
never developed, forcing early colonists to rely on less
efficient alternative sources of energy. However, advances
in [Advanced Subatomic Theory (B3)] and [Gene Splicing (B3)]
finally allow humans to short-circuit the eons-long process,
providing them with the {Synthetic Fossil Fuels} needed
to build advanced vehicles and machinery."

And from the planetary report on Chiron:

"When plant material is buried, nitro-hydrocarbons have all they need to
"burn", so they will do so slowly underground, leaving nothing behind until
all the reducing material (hydrocarbon) or all the oxidizing material
(nitrate) has gone. We expect the nitrate to run out first in all cases,
leaving a residue of carbon compounds. Provided this does not come into
contact with oxygen, it will fossilize to produce ordinary fossil fuels.
Since Chiron has been hot and hypoxic for a long time, it should have all
the oil, shale, and coal the colonists could want."

Perhaps Planetologist Del Cotter was wrong about this issue? Actually,
that would make sense since if there are plentiful fossil fuels, then why
are they building solar collectors?