Infuriating.
The problem with this article is that it doesn't look at the actual repercussions of the different legal models - it's all just based on emotion. It's just a reductive 'sex work is bad, therefore we must make it illegal'. Okay, so if coercion/trafficking is a problem then decrim isn't going to make that worse - in fact the opposite. Same goes for the claims of rape and violence - decrim will help sex workers feel confident reporting rape and violence.
I always compare it to restrictions on abortions - no matter your moral objections to abortion it's a fact that people will still have them so it might as well be made safe.
I think SCOT-PEP have a good factsheet for stats (specifically for countering the nordic model)
http:// www.scot-pep.org.uk /sites/default/files/reports/the_swedish_model_summary.pdf