Cognitive biases affect everyone, regardless of experience or education. Biases are particularly tricky because even if a person is aware of a bias, they typically only notice when others are guilty but not themselves.
Then again, I have been reading books like The Undoing Project, Mistakes Were Made (But Not By Me), and Misbehaving so this response may be affected by my own recency bias 😎
Based on my reading of Misbehaving, if Nobel Laureate economists and huge investment firms can make critical errors because of bias (especially in the latter case when there is a lot of hard cash on the line) then we should expect devs to make the same kinds of mistakes.
There is a great post about this topic, I think it resumes it pretty well:
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