Not only is what he described simply not realistic, it's likely far more unsafe than "driving normally" because the behavior violates the expectations of many/m

Not only is what he described simply not realistic, it's likely far more unsafe than "driving normally" because the behavior violates the expectations of many/most other drivers and when people are thrown into situations that violate their expectations things get weird. "But he should have been using a reasonable following distance" makes for easy low effort internet points but internet points won't get you out of a hospital bed.