There is WADA and the local countries responsibility to test their own athletes as well. In the UK I know our top lifter has had at least 6 drugs test this year alone. At least 2-3 are out of competition random as well. 2 were even within a week of each other LOL.
It was more hyped in 2004 and 2008 if the sport didn't clean up and get so many busts at the Olympics. If they bust people not at the Olympics it is better. It means testing is working/ testing precedures/methods are better than before. Whatever as long as they bust more people.
Dropping Olympic weightlifting would be DEVASTATING for the sport.