There are two sides to the "Free College" coin. Americans like to embrace the "free" side, but the "college" side - not so much.
Because we have universally adopted the ridiculous notion that a college education should be available for anyone who wants one. Consequently, our colleges cater to millions of young "adults" who are, to put it bluntly, "not college material." They teach remedial courses, their level of academic rigor is a joke, and most of the offered college majors are irrelevant, worthless nonsense. Ethnic studies? Are you kidding me?
Germany has "free" universities, but the requirements for admission are rigorous, and not subject to distortion based on race, gender, or other extraneous factors.
I would wholeheartedly support "free" college at state schools for the top 20% of 18-year-olds, based on QUANTITATIVE criteria - mainly objective test scores. For the other 80%, they would be free to go anywhere they could afford to go - at their own expense, with no government loans or subsidies.
And I submit that diplomas from such state colleges would be quite valuable, as employers would know that the students are all top-notch, and the coursework is no nonsense.
But of course, excellence in education is a fantastical pipe dream as long as Lefties control Academe. They would insist on "diversity" in the "free" state universities, which would in-turn require watered-down course work, bullshit majors, and we would be no better off than we are now.