If the sex worker is consenting without duress and is being treated well (I recognize that's a big 'if') then I'm fine with it. I have no inherent objections to sex work itself so it would feel like a double standard to judge the people who use it.
Unfortunately the moral waters are muddied by the rampant trafficking, drug abuse, etc. within the industry.
Hardly the first time someone has smiled in a mugshot, guilty or innocent.
If found innocent then it takes on an 'I told you so' energy. If guilty it makes you look like an even bigger piece of shit.
I wouldn't be surprised if the severity of their situation hasn't fully set in yet. The realization will come crashing down if/when the first of them is found guilty.