Many schoolchildren - and, sadly, many adults - find bullying, intimidation, racism and misogyny utterly hilarious. Do you believe sharing that "sense of humour" is a recommendation for a member of staff at a school? People who do things for "a laarff", "lolz", "bantz", etc., are usually objectionable and not at all humorous to anyone else.
Having a sense of humour is different to sharing someone's taste and preferences in comedy, or laughing along with racism and misogyny.
Another poster said it well when they suggested that if your face would go like a cat's bum the second something wasn't done your way/to your taste then working in a school probably isn't for you.
Having a sense of humour and the soft skills of working with children who are often considered 'difficult' means that I've had some interesting discussions about racism, misogyny, hate, bullying, emotional topics and those children have had the opportunity to learn something.
Someone with no sense of humour who doesn't engage well, and gets arsey because they think teens should be just like grown adults, and specifically the right type of adult, wouldn't be able to create that teachable moment because their head is too far up their own backside to do the job.