I think that the argument is that if an employer can afford to pay a worker $30,000 per year and the unemployment tax is $3,000 per year then the employee gets $27,000 per year. So the employee effectively paid that tax, not the employer, even though the employer is the one who sent the money and the employer is the one who is liable for the money.

They just pass the burden onto the employee. They have to because that’s just how it works. Just like the customers pay for a restaurant’s rent in the form of an increase in prices to cover the cost.