Red flags for sure. And I say that as a job hopper myself. Not going to lie, Finding the correct landing place can be hard. I've had my personal issues with it, and I am still working to figure it out. While it's true that companies at times are guilty not being patient with employees at times, it's also true that a lot of people are too impatient and won't stick things out at times too. These are strange times. On one hand, handouts due to covid convinced many that they don't need to work for an extended period of time. On the other, companies will drop you like a bad habit the moment things go south. And who can blame some of them. Shut downs stretched a lot of employers thin and if they were lucky enough to stay in business, they do not have a lot of recourse if things don't work out. And in the middle, a lot of us are just trying to figure out the best course of action for us and our families. Granted, this goes back further than Covid. There was a time people kept a career for decades, with the same employer. Now? Your friend's resume is not unusual in this climate. Extreme, but not unusual. I feel like a lot of it happened after the tech bubble burst in the early 00's. After that, things were just different.
A few questions: Was he doing multiple jobs at once? That is happening more and more. Like, I can train clients as a trainer and teach HS as a teacher. I have summers off and long holidays. Some people may moonlight to make extra cash and have it on linked in....