* Actual job was not the thing promised in the interview
* Hired person and work environment do not "click"
* Got a better paid offer after N months
* Hired person was not up to the task and fired
* Work environment was toxic
* Hired person was toxic
And probably a few more. In all these cases, IMO there is a much bigger responsibility on the company,because they are the stronger side and the one that has the last word on hiring someone. So, it ends up being manager's fault. Having been a hiring manager myself, I can only excuse the manager in the case of a really, really, good faker during the interview phase. But those are not the norm.
False. A lot of times, companies make an offer which are then rejected by a candidate because they have another better offer. Maybe not in 2024, but it was very common until 2022.
In the spirit of the overall thread, specifically re: your comment "IMO there is a much bigger responsibility on the company,because they are the stronger side and the one that has the last word on hiring someone." - a company is not always on the stronger side. In 2021, a lot of workers had the upper hand.