Frankly a highly speculative set of conclusions. Despite the green deal forbidding converting woodland to crops, the author assumes the opposite. Then they basically ignore the organic requirement. The idea that EU will wholesale move their food production (likely the strictest in the world) to Africa is so outlandish as to not be taken seriously.
That’s entirely the wrong denominator for this comparison. IRS doesn’t write the budget nor do they write tax law, they just collect.