Getting jobs has a lot to do with job search ability, so maybe the thing to do is read some books about that. Statistics may say X% of physics majors got a job, but they don't typically tell us how hard it was for them all to get that job. I think the main point of my pessimism about the job market is not to claim that people aren't getting jobs, but rather to clue people in on how bad the situation is if you search the internet and look at how outrageous the job postings are to someone who is a newcomer to the job market and how difficult it can be to find somewhere where you fit in and someone willing to hire you, regardless of whatever the stats say. The thing is that getting a job is something that you pretty much have to do. so people find a way, even if it's hard. If you put a bunch of people in a room for a few days and require them to learn to juggle 3 balls or else have their heads chopped off, you might get 100% of them learning to juggle the 3 balls, but that doesn't mean it was easy, it just means that it's doable. And the fact that the stats are even moderately bad for something that is more or less a requirement indicates the difficulty. Although I think we have way, way more physics and math majors than is justified by the demand, I am more concerned about cluing people in on the gravity of the situation, so that they don't walk in unprepared like I did, than I am about scaring them away from studying the subjects. And I think my job search gives me enough data to say, yes, that's how the job market is right now, at least as of 6 months ago because it's not my experience and personal difficulties, but rather the hundreds of job postings that I looked at that inform my outlook.
Just be prepared for it because it can be brutal if you don't have connections to get you the interviews. So, get as many connections as you can and be as prepared as you can for the kind of interview you are likely to face. And have a plan. That's more important than your major. Just don't count on things working out. Even if it's 5% chance of being unemployed for a year, I think that's too high, although it's too high for everyone, not just physics majors.