Wikipedia:

Bad faith (Latin: mala fides) is a sustained form of deception which consists of entertaining or pretending to entertain one set of feelings while acting as if influenced by another. It is associated with hypocrisy, breach of contract, affectation, and lip service.

Here are some nice examples. I can’t come up with a perfect example rn. www.grammarly.com/blog/bad-faith-good-faith/

It boils down to essentially playing devils advocate just to shut someone up.