I chuckled to myself earlier thinking that if we could drill deep enough to get at pools of abiotic oil we wouldn't need it because we could simply generate plenty of energy from the thermal differential.
Well - chuckle away ... because it HAS been looked at quite seriously. Lot's of issues - can be done - but marginal economics - and terrible engineering/chemical/mineralogical problems.
Got my own LOTD from your alternet link. Are those people actually capable of walking upright ?
Your observations about 'abiotic oil' are on target - it is always much easier to 'destruct' than construct - ie. break down long-chain hydrocarbons (such as cellulose, proteins, etc. ) into short chained ones that we commonly refer to as 'crude'. Building up longer chains from shorter ones - ie. going from methane to octane - is much more complex, and would require (to my knowledge) some damned rare natural coincidences ... unless there is a common catalytic agent present in the earth that I/we don't know about ... yet.
Hat tip to you - you got the wording and phrasing brilliantly that I was searching for in vain on 'peak oil' ....
(which is statistically obvious in terms of production).
Hyup - Bingo.
As to abiotic oil - skeptical, but not willing to write it off. Got burned on abiotic gas - glaringly stupid and arrogant on my part - and had never considered CARBONATES as a carbon source for it - until presented with that idea, and theory on how it could happen (basically, hydrolysis of water to get free hydrogen - under extreme pressure and heat - then simple combination with the carbon from 'de-carbonated' carbonate.)
In the fwiw dept. - we had a deep gas well out in West Texas that had produced for years - and came time to do some major overhauling of the mechanics.
The 'well head assembly' could NOT be disposed of through normal 'junk yard' recycling means .... because the blasted thing had become too radioactive over the years from all the crap that came up with the natural gas. Had to be treated as 'hazardous waste'.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...