So you admit they DID tease NATO membership when the had no intention of granting it!
Progress!
NATO did not “tease” membership. Pre-2022, that was an Ukrainian desire, and an official/unofficial request, which is understandable given their circumstances. Ukraine joined everything it could that was NATO related.
After 2022, we can say that circumstances have changed. NATO has officially endorsed Ukrainian membership as of 2023, I believe. Wars change things.