Well the numbers being off by an order of magnitude is a good reason. The US tax revenue would have to double just to pay for anything that resembles UBI.
The carbon tax would have to be obscene to gather that amount of money (another $25k in taxes on a middle class US family). Even if people survive the initial shock, the rapid drop in demand for anything with a carbon tax now means that UBI has a budget shortfall and has to be cut.
It’s horrendously stupid to tie something we want to be dependable (UBI) to revenue from taxation on things we want to stop.