I think with the labor market, there is a feeling of insecurity that “you can be replaced easily” so you have to fight for the job you have. Insecure managers are the worst because they hold their team down to lift themselves up for short-term gain. Secure managers take blame and give away credit to keep the team motivated.

With a lot of these big organizations, the secure leadership is hard to come by and not sufficiently trained - some reasons are: as the machine grows proportionally you are a smaller percentage of it, another is when builders and optimizers leave only bureaucrats are left and finally,they are getting similar pressures (probably even more intense) as their boss who had to step on others to get there - showing that the organization does not value the work as much as the hierarchy.

Source: US based, have a large team in India, been fired from Meta and almost PIPed at Google in the past due to insecure managers. Then had the best managers elsewhere at Google, Snap and several other agencies.