Take care not to let cynicism, spite, or resentment overshadow a strong core argument.
They can lack social skill, be rude, be incompetent, slow the project to and make it ineffective. And many still keep failing upwards.
There are good managers, it is not they don't exist. But bad ones are way more frequent then should be. People completely unsuitable for leadership keep staying managers despite destruction they cause.
Managers have issues too, particularly good ones who care about their direct reports and getting projects done without death marches. The incentive structure is off. They are rewarded for the wrong metrics, things like number of reports (top tier metric and is a primary basis for getting titles like senior manager, director, VP, CTO, etc), which encourages growing your kingdom. Politics, credit for accomplishment when you're only a proxy for work and don't have control of all the constraints.
It's not uncommon to find yourself in the position where making the right call will be bad for your prospects for internal growth. Which means when you don't corrupt yourself, after a time you dust off your resume and try to make the next step at the next position instead of internally.
Still, you work with where you are and what you have and do your best. I want to be able to take a hand on the business side as I'm tired of projects falling apart due to bad business underpinnings I can identify from the outset. That means playing the management game from the inside so I can get to CTO where I hope to be able to make a bigger difference.
It implies that layoffs are hitting non-supervisory non-managers more than line supervisors; but “management” includes non-supervisory specialist managers, and middle and upper management above the line level, all of which could be hit more than line supervisors and those they supervise. (Ideally, not enough to really make a difference in this effect – but an overload of non-line, particularly middle and specialist, management is not an uncommon organizational disease.)