Larry Olubamiwo used 13 various prohibited medications

The boxer Larry “War Machine” Olubamiwo applied some anabolic steroids, HGH, IGF-1 and other doping preparations during six years. However certain tests have been conducted earlier, he was caught just in January 2012. After a fight against Sam Sexton Larry Olubamiwo tested positive for banned medications. Metabolites of steroids were not discovered in his sample. The athlete tested positive for EPO. EPO represents a blood boosting medication.
Long-term application of forbidden medications by Olubamiwo was a real embarrassment for the United Kingdom Anti-Doping. Andy Parkinson, the CEO of the UKAD, tried to prove that the suspension of Olubamiwo for administration of 13 various forbidden medications is a real success of the UKAD in the struggle against doping.  
Andy Parkinson noticed that it was an unusual case. The boxer administered steroids and other related products for prolonged time without fear to spoil his health, career and reputation. He was sentenced to 4-year suspension.
But the alarming aspect is following: Olumamiwo could avoid detection for prolonged time, despites significant efforts of anti-doping officers to “clean” sports from administration of doping preparations.
Olubamiwo was caught just because the UKAD was informed by the United States Drug Enforcement Administration (DEA) that he became the target of an investigation related to illicit sale of anabolic steroids and other performance-enhancing drugs in the US. Then the UKAD conducted a test which resulted in positive results for EPO.
Robert Smith, the General Secretary for the British Boxing Board of Control, supported the affirmations of Andy Parkinson about efforts and success of anti-doping officers. He noted that the case displayed that cheating couldn’t be hidden.
What do you think about the case? Do positives for EPO and the ban of Olubamiwo display that anti-doping agencies work successfully? Or does the case demonstrate that anti-doping system is not proper?
Each person can make own conclusion. But it is clear that the athlete could take different prohibited drugs for 6 years without being detected by anti-doping officers.