Exactly I've worked at places like this and the cadence is usually set by the people in leadership. If the boss up top is a drunk and boning every 20 year old ( been at one such place ), it sets the tone for everyone else. Also does not help if everyone in the team is young and DTF.
Tech companies, and startups in particular, tend to have these problems because their culture and leadership is sophomoric and immature, and those people hire and promote (or fail to fire) similar people.
If a CEO thinks this is a problem in their company, then they need to, well, be a CEO and do something about it. Leadership sets the tone. Lack of leadership creates a void.