It's a complete political loser but it's actually necessary as part of the transition to a car insurance model for health care.
This is why if we have the GOP pass this horribly unpopular part of it for us, it's a big net win for us going forward. We get a necessary but unpopular change added to the books, and we get to run against them on it while not actually changing it once in power. Right out of the GOP playbook!
The reason we have our shitty employer-sponsored health care system in the first place is that during WWII wages were capped while benefits were not. So instead of offering more cash, they offered paid-for insurance. Once people got home, and the wage caps were lifted, people didn't want to give up the benefits. And so it eventually became formalized even though no economist or policymaker would actively want to set up this shitty system.
We need to get off this system into one w/ an individual mandate and where you go and pick out your own insurance options, so you're no longer insurance-locked depending on your employers' whims. An important part of this is that we need the funds that your employer spends on your monthly health care premium sent to you directly so you can spend them as you please! However, those funds are currently not taxed like normal income, and are thus not something you are allowed to mix together. By taxing them like normal income, they are now intermixable, and it allow you to start the process of converting those benefits to direct salary for employees.