Source that oceans will boil? Probably worth being precise if you want to argue. Food supply is an economics problem: people starve because they cannot afford food, because they live in poverty in low-income countried. And poverty is going down almost everywhere where people have regularly starved in the past. (I expect sub-saharan africa will break out of their vicious cycle soon). See: https://ourworldindata.org/poverty

I actually think that the world has and will continue to get better for the vast majority of people. I would say it’s pretty difficult to create a world where there is a 0% chance of anything at all getting worse, but fewer people are dying of malaria, we’re close to eradicating polio, way fewer people die in wars than used to etc. And even if most people are waay off on how to make the world a better place, at least they usually want it to be. Many humans working together on a task has historically been a great recipe for success. The better the world becomes, the more of us can spend time helping each other.