The more money someone makes, the few drug tests they take.
The more money someone makes, it’s also the less likely they’re working a job where people can be seriously harmed or killed by the direct, immediate effects of their behavior on the job. Jim from Sales being on smack is less likely to cause injury or death in the short term than forklift driver Klaus being on smack.
They have been for decades. You just aren’t going to see news stories anywhere major when what’s being banned by the morality police is something like loli or zoo content, but stuff no one wants to publicly defend are targeted first to set precedent to justify anything else they might want to ban later.
See the H.L. Mencken quote about defending scoundrels.