Why so many cut Nordost Odins?

Well yes. usually the per meter retail cost of a long cable is far less than a short one.
Then like myself, I use a seven meter pre tp amp cable. I am thinking of gettinga new one.. so I can divvy up my current seven meter cable if i want to..
Some wires I would never buy though as they probably are fakes.. mainly all the Kimber KCAG floating around for sale..
Some folks like to use different ends anyway..

IMO do not buy any cable which had been modified or damaged. mistake I have made and regret being stuck with a unsaleable item...

I would be a bit cautious when buying reterminated cables, particularly Nordost cables (or cables with similar construction) because they are harder to reterminate. These cables have multiple conductors, each individually insulated and wrapped with silk fibers. I would guess that a solder pot to burn all of that off would be needed, and even then, how would one know that the person doing the job matched whatever process Nordost employs?

It's very good profit to fake $10k cables and sell it for $3k. Who cares they'll sound same!

They're not necessarily fakes. The cables are so ludicrously priced per inch (not only Nordost is guilty of this) that there's huge incentive to make the most of every inch. Say you could -- at extremely aggressive discount -- get a several meter run from a "friendly" dealer or a connection out the factory backdoor. Then, your best strategy for profit would be to break it up into multiple (short) normal-sized runs and sell individually at a price that represents a huge profit, yet still remains very attractively priced (to some) relative to the MSRP. This is a byproduct of the cables' retail value (and hence used value on audiogon, which is almost always proportional to MSRP) so vastly exceeding its intrinsic or wholesale value. There's certainly no need to go to all the trouble of counterfeiting in a market like this!

It's a good scam for those with the right/shady connections; it leverages all the marking work cable companies have paid for convincing us audiophiles that these cables somehow justify such high prices.

A less cynical analysis is that some of these chopped runs come from hobbyists (not profiteers) that got a great deal on a used long run for their system, and hocked the surplus length to recoup funds.

BTW I have nothing against profit; you'll be hard pressed to find someone more free-market than I, but the system works best when profit is more often the result of real innovation & hard work, and less often from the no-value-added (or negative net value added) cash grab middlemen.