You’re quoting stuff from google that’s outdated going back to the 70’s.
NATO updates its policies and strategies every few years or in direct response to world order situations.
The last strategy review was in 2022
Why don’t you have a read - you appear to have plenty of time on your hands.
https://www.nato.int/nato_static_fl2014/assets/pdf/2022/6/pdf/290622-strategic-concept.pdf
Chapter’s 28-32 cover NATO’s CURRENT nuclear policy. No mention of first strike there.
Also read the chapters relating to NATO’s position on Russia and you will clearly see NATO is not a threat to Russia (only in the eyes of Putin).