When you put it like that, I sound like a socialist, and not the unrepentent capitalist I hold myself out as.
This certainly could be seen as no different than the government taking the tax receipts and simply paying down your debt for you. In that case, you are right, they are subsidizing, but the interest is being paid to the debt holders, so at least you retain some semlance of a business transaction. Perhaps the debt holders would reduce interest rates knowing that they have first lein on income streams.
The current plans have such things as debt forgiveness, which could potentially incent the wrong behavior, as opposed to this idea which would (in theory) incent you to get a job paying down debt as quickly as possible.
> When you put it like that, I sound like a socialist, and not the unrepentent capitalist I hold myself out as.
If the shoe fits...
There's no reason to subsidize college education. The recipients get the benefits, whether they are economic or non-economic, so they should pay the costs.
The other problem with subsidizing college educations is that the colleges see the subsidies and raise their prices.