I'm sure avoiding to trying to use "prostitutes" plays a part in using the term "sex worker" (this is after a PR battle - "prostitute" is a far more loaded term

I'm sure avoiding to trying to use "prostitutes" plays a part in using the term "sex worker" (this is after a PR battle - "prostitute" is a far more loaded term than sex worker... for now). But typically sex workers can also include porn actors, strippers, web-camers (if you want to count them separately from porn actors) and other professions. Basically it's both a broader term, as well as a PR move.