Ask HN: Would you hire a burnt out engineer?
If a candidate responds, "because i'm burnt out." To why are you leaving your current company? Would you disqualify them?
Being burnt generally means one of a couple things (there are others but this is where I'd start wanting to understand):
1. You can't manage expectations so you overload yourself. e.g. you can't say no
2. Your manager was poor and drove people into burn out.
And to be clear, I wouldn't be asking you if you just can't say no, I'd be testing you in the interview to see if you can be disagreeable. If you can't be disagreeable then you'll just do the same thing for me and I'd be replacing you again shortly if I hired you. So it would be a pass.
If instead it is #2 or some deviation of the same, then it'd be less of a red flag, but still concerning to make sure you were good by the time you start on my team.