I don't think I used "bad" anywhere, but it's something we're generally told not to do. If you Google that specific question about first person, you will likely get the answer "don't do that". (I ran a few searches like this myself already). "The prime consideration" is a bit strong.

Can you be successful with a first person resume? Yes. You can also be success with a third person resume, or a resume that is web-based and includes only a list of links to your code repos.

My evidence is from reading resumes every day of my life for 20 years. Tens of thousands from people all over the world. You can call that anecdotal.

The thing is there are no "official" rules for resumes like there would be for haiku or sonnet. It's not that kind of writing, but there are norms.

As another example of a norm, an experience section is written in reverse chronological order (most recent experience first). Have I ever seen someone write it another way? Of course. But that is also incredibly uncommon.

We typically put contact info at the top. Can you put it on the bottom? Maybe even on the last page? Sure. But that would be unusual, and the reader may be inclined to thinking that you don't know how to write a resume.

I think I've used up all my energy in talking about resumes today, and I need to go write some resumes. Enjoy your day.