This is like the San Antonio Spurs...
Seriously. Every single year, everyone writes them off as being too old and washed up. But every damn year, those oldies are dominating the NBA and are ALWAYS contending.
Blackhat SEO will never go away. See, even when Tim Duncan retires, Kawhi Leonard and Lamarcus Aldridge are there to lead the way.
Same with Blackhat SEO... Even when some methods and tactics are not working, someone will always find a way to game the system.