How does one define 'genuine'. There is undoubtedly disagreement, so I suppose your question is "is that disagreement motivated by political views?". Without knowing the inner hearts of individual historians, that is sort of an impossible question to answer definitely. The issue is that, where there is a lack of evidence (such as in this case vis a vis the motivations or lack thereof of Stalin) one's personal politics almost inevitably intercede to help one interpret that evidence which remains. There is nothing wrong with this per se; there are tons of historical analysis from differing viewpoints.

In terms of this particular event, there are three general sides:

• Stalin knowingly and deliberately starved the Ukraine as a form of ethnic cleansing, particularly targeting the Cossacks who had made up a strong group of resistance, both initially to the Red Army during the Civil War, as well as to collectivization.

• Stalin knowingly created the starvation through indifference to larger goals, again, due to the above mentioned reasons, even if it wasn't a deliberate attempt at ethnic cleansing.

• Stalin instituted collectivization and purges throughout the Soviet Union, of which the Ukraine was merely one of the hardest hit.

Now, there are nuances to each of these interpretations, but that's generally where people lay. For the most part, I'd say the majority of western historians fall on or between the first two camps (with, honestly, most I've read in more recent times minus Cold War influences leaning towards the second) while most Russian historians lean towards the third (and some particularly nationalistic ones inserting ideas like "sacrifice for the good of the nation" type sentiments).

Which is right? I am not going to try to answer that particular point since it is outside the scope, but based on the information I personally know being available, it is not possible to necessarily prove any of them are outright falsehoods.