In an ideal world where everything and everyone is right, it would be fair. But this isn't an ideal world. Firstly, lots of people have a low opinion of sex work for a reason. It's literally the easiest and oldest job in the world - no discipline or (transferable) skillset just looks, and even looks isn't necessary. Sex work may be enjoyable but it is not respectable in any regard. Let's keep it real.
Secondly, if I were the head of the record label I'd also kick her out because at the end of the day a company runs on money, and the image of a sex worker in your music band would definitely affect publicity and profit (this was a time when Janet Jackson got cancelled for a nip slip).
Every action has an effect/repercussion and this was the effect of her past action. I'm not responsible for that, you're not, so she alone is responsible for the effect. She could have been honest about her past or owned it like some other hoes do, but decided to sweep it under the carpet like it never existed. If they rejected her then at least it would be from the get-go and not the eleventh hour after giving her hope.
Even if that was her dream job it's not a death sentence she got rejected, by that definition most people are living death sentences. When I applied for a Major at my university back then I couldn't get my major of choice because I didn't write the exam for a required subject in high school. Yes, I was a teenager, with all the foolishness that comes with it, but nobody forced me to skip that subject, in fact I was advised NOT to skip it. I take full accountability for that and play with my new deck of cards because who else would be responsible for it?
At last, people will judge and shame, that's life. Nobody can have good pattern recognition, proper judgments or good decisions about safety of self and others/risk mitigation/profit without judging. It's part of why we humans are at the top of the food chain. People judging or shaming is outside one's control but your actions (and consequences) are within your control.
Let's not do things that we'll feel the need to hide in future, but if we must do it then at least own it and prepare for the effects later on, instead of letting the past own you by acting like it doesn't exist or scurrying to some obscure part of the country and avoiding the internet like a fugitive.
