Closing many of the corporate tax loopholes is good, regardless of what we do with the money; paying down the deficit, investing in public education, reducing greenhouse gases, etc.
The 10% VAT with a $1k/month UBI is an interesting proposal. Assuming the VAT doesn’t apply to real estate, the consequence of the propsal is that a household would generally need to be making well over $300k / [person over 18] in order not to do better under the proposal. (It would get a little regressive within the top 1% as households with $1m/year incomes tend to spend more of their money than households with $10+m/year incomes.) The plan could also contribute to making college more affordable.
I’m not certain the math holds up and that the overall plan isn’t likely to increase our deficit. Nor am I certain this is the best way to go about tackling wealth inequality and the strains on the working classes in the country. But it isn’t crazy.