Would you put blame on doctors for contributing to the opioid?
I'm gonna assume by "contributing to the opioid" you mean over-prescribing pain medication for the commission? If so, that comparison is so far-fetched that it's completely meaningless. You're really going to compare that with independent creators having skippable ad reads that have to be clearly marked as such on content you get for free?
Sure, Patreon is great, but Patreon alone is not enough for most creators to make a living, considering how hard it is to get people to commit to monthly subscriptions.