6 Underground is a bombastic Bay-hem born out of Michael Bay's creatively bankrupt brain that violates your visual and auditory sensors to the point of numbness.
I can't call 6 Underground the worst movie of the year, but certainly the worst utilization of talent and budget. The cast could have led or supported any other movie much better, but in 6 Underground, people just yell and quip (lamely) for two hours straight. The plot is thinner than a strand of hair, with the only saving grace of the production being its stunts department. They did their best to use practical driving and parkour effects, but Michael Bay's 10 cuts/second made me dizzy and somewhat nauseous.
In the age of good blockbusters (e.g., all the Marvel movies), 6 Underground has a much harder time meeting anyone's expectations. Maybe 25 years ago, the Bay-hem was fresh and appealing, but in 2019, Netflix's 6 Underground is a 2/10 at best.