Smells like British propaganda. I’m not too knowledgeable about this event but based on limited reading, the general consensus seems to be that the famine was at minimum greatly exacerbated by British colonial policy.
If you look at famines across history, almost all of them involved some forceful disruption of local people’s ability to grow or fairly distribute food according to their needs. Humans as a rule are quite good at producing and procuring food from their environment. Famines usually only occur among heavily subjugated people.
That said, comparing it to the Holocaust seems extreme. I don’t see any evidence that the famine was an intended outcome, it was merely considered an acceptable cost of British colonial extraction, which they deemed necessary for the war effort.