> That's an incredibly privileged position
Often it is also position that was earned by hard work and delayed gratification. You make it sound like OP is in such position purely due to luck but he obviously made some right choices along the way.
That's an incredibly privileged position. Sometimes, people resort to various tactics, including embellishing and ghosting to get ahead, especially when they feel like they have no other choice.
That doesn't excuse it, but it happens anyway.
What's important to remember is that the power wielded by the company and the employee is not symmetrical, so they have to be treated with a double standard. A company will always be better equipped to lose an employee or handle a rejected offer after a round of interviews than an employee in the reverse position.