How does choice blindness affect UX research? [on hold]

Recently came across this Ted talk about a phenomenon called choice blindness.

from the link: Experimental psychologist Petter Johansson researches choice blindness -- a phenomenon where we convince ourselves that we're getting what we want, even when we're not. In an eye-opening talk, he shares experiments (designed in collaboration with magicians!) that aim to answer the question: Why do we do what we do? The findings have big implications for the nature of self-knowledge and how we react in the face of manipulation. You may not know yourself as well as you think you do.

https://www.ted.com/talks/petter_johansson_do_you_really_know_why_you_do_what_you_do?utm_campaign=social&utm_medium=referral&utm_source=facebook.com&utm_content=talk&utm_term=social-science

How does this impact the results of ux research? Does that mean it will be biased?

For instance if we show a user the what looks like a popular and prominent commerce website (e.g. asos) but we replace the experiences with poor ux, would the participants come up with reasoning that the overall experience is good.

What are your thoughts??