Parting company should benefit both side. Layoff often come with severance package to give those who were let go time to find another job, at least I hope that's what Tesla does.
no that's just how the employer qualify these people, it doesn't mean these people are responsible for Tesla's shitty management or them missing their financial objectives. They are scapegoats Tesla uses to save face in front of their investors.
Companies will very rarely propose a pay-cut, but more likely they would just rather find someone else. Because they have specific jobs that needs doing and can't afford to have something done poorly.
Even if hiring was perfect there would still be rational reasons to fire sometimes. And hiring is far from perfect.