I agree palm oil is an issue, and it's personally caused me some angst not just with food, but with buying soap. For a while there, I was replacing my soap made from animal fat, with palm oil, until I realised that maybe that palm oil might well not come from sustainable plantations, but unsustainable practices. What to do, not wash, substitute with some other petrochemical based product, only buy super expensive olive/coconut oil soaps? The reality is, once you're no longer a single young person, and you're on a limited income, the choices become more and more difficult to make.
I don't see how becoming vegan is feasible for most people. I'm glad for those who manage to have this kind of diet, but I just think it's not possible to get everyone to do this and trying simply alienates people from making feasible changes to how they live and buy.
There are people on this earth, lots of us, and only a very small proportion of us with the luxury of living in a fine country like this where food is taken for granted. In these countries where the majority of people live, food comes at a premium, you eat what you can get. The reality is that most developing country inhabitants are already virtually vego anyway, because meat every day is a luxury of developed countries - Australia being one of them.
Countries like ours and the people in them, like us, have a lot of power in our hands regarding what we choose to buy and not to buy at the shops. So, yes, I agree labelling is a great way to address demand for products that cause harm to the planet, we all need to be educated on our buying habits. Palm oil can be produced sustainably too, we can choose to buy sustainably grown palm oil, that creates jobs for people and puts food on their table.