I know Americans are born with a fear of decimals. But that is not a phobia the rest of the world partakes in. With decimals there is an infinite amount of unit of measurement between freezing and boiling point of water, which according to your system makes celsius infinitely better than fahrenheit.

They are indeed very wrong. Their percentage is gauged for a very specific climate, and is entirely subjective. You may personally and subjectively think it suits you, but it is not objectively a better unit to use for weather in the slightest. It would make no sense where I live for example.

Spoken like somebody who doesn’t experience freezing degrees very often.

It is not average Earth temperature though.

So palm oil is definitely something that makes a product non-vegan, right?

Primarily for cider. Of which you can make vinegar, but that was not the primary reason. It was cider, which was the most popular drink in colonial/early US.