Interesting... 5 years ago I was contacted by a recruiter for a job offer in a (sic) "non-standard industry". Back then, "fullstack development" was the job trend for "people who deal with computers".
During the first call, she told me her client was the biggest adult website in my EU country of origin. She insisted that the working environment was (sic) "clean".
I raised that topic during my interview with their CTO. He told me the opposite of this post: devs were running the website locally with place-holders and innocent cartoons videos. He was straight-forward about it and mentioned "of course, once in a while you have check an issue on the live website, the way we handle this is by joking about the live content between us."
For those interested, they had a pretty standard stack for such a high volume website. Postgres, Django, Redis and RabbitMQ with an HAProxy frontend.