Of course, there's a whole continuum here - you could argue that a flouncy woman whose job is to turn over tiles on a game show (wordlessly, naturally) is also a sex worker. Rule of thumb - could an ugly woman get the job? If not, it's sex work.
Sex work is not a continuum. Sex work involves (a) sex or (b) deliberate titillation, which is what strippers do by removing their clothes and miming sexual acts. Booth babes and Vanna White do neither. To claim that they are even remotely similar to sex workers is, quite frankly, insulting to women because you're suggesting quite loudly that the mere act of performing activities in tight clothing constitutes sex work.
Comments like yours likening booth babes to strippers and sex workers is precisely why they are now banned from CES. Because too many people assume they are sex workers and not actresses/models who are just doing a marketing gig.
Their goal is to bring attention to their employer’s product by titillating passers-by.
That's the whole reason they are called “booth babes” and they are selected for their ability to succeed in that modality of attention-getting.
They don't generally wear revealing clothing and act provocatively just out of personal preference unconnected to their specific job duties.
Of course, people should have every right to work in this way. But just because I don't judge a woman for being a stripper doesn't mean I wouldn't judge my employer for hiring one. It's unprofessional.