I disagree - I think the comment is not implying the guild is addressing any problem at all and makes it quite clear that the guild is the cause of the problem.

I disagree - I think the comment is not implying the guild is addressing any problem at all and makes it quite clear that the guild is the cause of the problem. They are not saying that doctors invented PAs to solve the chronic shortage, they're saying that doctors created the chronic shortage which necessitated policy intervention in the form of PAs. I think you've just misread the comment and would find that it actually agrees strongly with what you said.