People like Duncan Steel and Mike Exner have predicted MH370's route based on a number of assumptions, but their complex assumptions unravelled because one or more of their underlying assumptions were wrong. Rather than childishly crow at the fact one side was right or one side was wrong, what would be helpful would be an honest reappraisal of those assumptions rather than continuing to try and make the same old assumptions fit a different impact point.
For example the BTO error in signal data from 18:25 UTC to 18:28 UTC suggest MH370 flew west through the Straits of Malacca at 4,000mph (Mach 5). Instead of addressing that flaw the Independent group have brushed it aside or ignored it. Evidence from the Bayesian analysis report dated 03 December 2015 however set out compelling evidence for a massive electrical failure.
Put quite simply electrical failure-hypoxic flight is mutually incompatible with the alleged radar sightings in the Straits of Malacca. Nobody much has thought to question the veracity of the radar evidence.
Neither Thailand's radar at Hat Yai, nor Indonesia's radar at Lhokseumwae saw this miraculous transit of the Straits, yet it was this that formed the underlying assumption for MH370's location at 18:22. Without a confirmed start point the BFO data are meaningless Doppler vectors. It cannot be assumed MH370 circumnavigated Sumatra.
Nor for that matter if MH370 suffered massive electrical failure can it be assumed the satellite handshake data values were not corrupted. Excess heat or cold could have altered the BTO transmission bias, thus relocating the ping rings. Any changes in AFC oscillator frequency could have distorted the Doppler BFO values for part or all of the flight.
If electrical failure rendered the SAT data unreliable then of course all the calculations by Duncan Steel and Mike Exner could be hundreds of miles off course.
The basis for assuming MH370 impacted further north appears to be the growth of barnacle varieties on the Flaperon that needed immersion in warmer waters than the supposed impact location, however they neglected to consider that with it's internal volume, the Flaperon acted more like a sail and likely drifted further north than other MH370 debris lacking marine growth.