Legalising prostitution doesn’t make illegal prostitution go away.

How many illegal banana vendors are there? How would a banana vendor benefit from turning towards black market operations? Because there’s banana plantations around which engage in slave labour, should we outlaw bananas?

On the contrary, by normalising prostitution, the demand increases but the legal (voluntary) supply doesn’t.

Why would demand increase? Why would supply not increase? After all, legal prostitution doesn’t make people hornier or lonelier, and legalisation improves workplace conditions.

By decriminalising the prostitutes, the Swedes are effectively providing them with legal protection.

I see, you still haven’t read the link. “Come to the police for help and we’ll arrest all your clients” is not a good situation to be in if you’re trying to make a living. Swedish sex workers are forced to be co-conspirators, they are forced to keep their clients anonymous, or they’re out of business. Can’t keep records around, can’t keep customer information around.

As a feminist, I’m a staunch advocate of bodily autonomy and have no issue with sex workers

Then why are you ignoring what they’re saying?

Let’s look at your source. Your source:

Furthermore, those in prostitution face abuse and degradation on a daily basis; studies – even from groups that advocate for the decriminalization of the sex trade – find that 90% of women in prostitution have experienced violence at the hands of sex buyers, pimps, or other exploiters.

The source that’s from:

The sex workers in this research were asked whether they had experienced violence in the past twelve months and which forms those had been. 60% said they had experienced physical violence, 78% sexual violence, 58% financial-economic violence and 93% social-emotional violence.

And further:

Social-emotional violence as well as other forms of violence often stem from the stigma attached to sex work.

…so not only is your source narrativising, it’s right-out bending the truth: That 90% figure is violence inflicted by general society. Among others, SWERFs who ignore their voices. You are engaging in it yourself.

The source of the source then recommends:

• Make sex workers the center of prostitution policies and address violence against sex workers.
• Lower the threshold for filing police reports.
• Decriminalize sex work so that all sex workers have once again access to (labor) laws, thereby reducing the risk of violence.

…all three of them are incompatible with the Swedish model: The Swedes systematically ignore the voices of sex workers, make it harder to seek help from authorities, and they don’t have access to usual labour protections, either. In particular (towards the end) they point out that a majority of sex workers in the Netherlands aren’t licensed because the licensing regime isn’t up to to the task, can’t be arsed to go into detail now but I suppose it’s stuff like municipalities being allowed to declare prostitution off-limits everywhere within their territory, without giving actual reasoning why that’s necessary. Obviously, getting help from the police isn’t that easy when you would have to admit that you’re not licensed.

I’m sure there’s plenty of stuff that the Dutch could do better, their approach to law enforcement is weird overall with police wilfully, and systematically, ignoring law breaches. Like yes it’s all good that you’re not cracking down on the cannabis trade but maybe then actually legalise and regulate it, don’t leave it to criminal gangs?