How do you define "pimping"? Because as can be seen form the statements by Swedish sex workers themselves, the Swedish definition is very broad and includes things that can't rationally be called "pimping". Also, Sweden criminalizes buying sexual services while at the same time pretending adult women freely selling sexual services are all "victims" that need the matriarchal nanny state to save them from evil men and from themselves.
From your second link, on the first page.
"[The Swedish] model has damaging
consequences for sex workers’ health,
rights and living conditions. However,
these negative impacts are rarely
discussed, and sex workers’ voices
are consistently silenced. "
Several researchers have concluded that there is less human trafficking in countries where prostitution is criminalised and more in countries where prostitution is legalised.
Which "researchers"? Those with ideological opposition to sex work?
Also, prohibitionists generally equate all sex work with "human trafficking".
Overall, I think people who in any way call themselves "liberals" should seek to maximize people's liberty, including sexual liberty. Prohibiting consensual adult sex work flies in the face of liberal principles.