Very old boys club, if you have an issue, YOU are the issue.
All of the outwardly facing concern for mental health and the company values are lip service, it's a very negative environment beneath the surface.
Management and HR are only concerned with themselves, as long as the money is coming in they don't care about you.
Some really bad eggs within who are dangerous for the entire business.
Unsurprising there is so much turnover of staff.