Got another link?
It also maximizes the number of people paying into the insurance pool.
Does your government have due process? If it does, how would that government use an obligation to provide you health insurance against you to influence your decisions?
People quit jobs far more often than they quit countries, and employer provided insurance does tie you to more strongly to your employer (e.g. I knew someone who needed a heart transplant who would literally die if he went without insurance, because he depended on a heart pump).
Also, you have to get insurance/healthcare from somewhere, and in a democracy the government is far more accountable to its citizens than an employer typically is to its employees [1].
[1] This is very clear in the typical case, but less clear for people with rare in-demand skills (like software engineers).
That's a great video.