Both. It’s satire.
The “benefit” of world hunger is that it keeps people locked in their place and entrenches the status quo. This is actually true, and the author believes it, but he doesn’t like it.
Many people benefit from world hunger though, and every time you hear that poverty is a hard problem to solve you should ask yourself, how much of that is actual problems and how much is the status quo resisting change?
It’s probably easiest to ignore what lib Dems say because they’re don’t have to put out a coherent policy platform, because no one expects them to be in power.
Instead look at the seats they want to win. Their plan has always been to mop up Tory votes in places that can’t bring themselves to vote labour.
It puts them firmly in the middle between the torries and labour. It’s also why e.g. they played down rejoining the EU at the last election. It might be their official stance, but it doesn’t play well in the rural Tory seats they’re targeting.