One thing you didn't mention that I think has kept me from getting hired at several places is I'm just in a different place in my thinking about code than the hiring team. For example, I firmly believe that Redux in React with hooks reinvents most of the problems we had years ago with Singleton. Most interviewers won't remember that era, and of those that do, some portion won't have grown beyond using Singleton. So if I said this in an interview, I probably would not be hired by these people.

I also am very passionately pro-Test Driven Development. I've interviewed with a lot of people who feel religious application of linters is very important, but tests are not. Those people are not likely to hire me, even though the very fact I've written an awful lot of code where I had to mock dependencies from lots of libraries means I have a deep understanding of how they work under the hood.

The simple fact is that people often don't believe there's much value in thought processes that are radically different from theirs (if those thought processes were right, they'd already be thinking that way, right?), so they only are going to hire people who think similarly to how they do.