> They keep money in bonds (lending money to people, corps, govs that need it), stocks (raise the value of companies that are valuable thus letting them borrow more etc)

That's wealth that should be taxed.

> The immaturity of people when it comes to economics is a problem

I agree. Just not in the way you imagine.

> That's wealth that should be taxed.

Wealth taxes are fairly controversial, and not very common around the world.

But they have been implemented in a few places, and we can look at what real world effects have been observed.

You're broadly correct.

Don't let the uneducated messenger distract from UBI itself though. Proposed seriously, it's about reducing asset values and high incomes to redistribute that value to everyone who isn't losing more value than the UBI. The real argument is that it would mean short-term economic costs to build a more robust system with a bigger pool of people with the safety net and risk appetite to start/join companies.

The interesting question about UBI is how to finance it. It's far from a settled question what would be the best or even just a good way to do so.

You seem to have something very specific in mind?

I don't really. You're right, ofc. The details about what taxes pay for UBI and who pays them are obviously of key importance.

I don't claim to have the answers. My point is just that there are interesting benefits that are worth weighing against those costs.

Btw, land value taxes (or as a second best, property taxes) are worth looking into.

In the UK, council taxes also roughly have the right structure. Though the discount you get for unoccupied property is crazy. It's exactly the opposite of what you'd want to encourage.