Goal of NATO is “to safeguard the freedom, common heritage and civilisation of their peoples, founded on the principles of democracy, individual liberty and the rule of law. … to promote stability and well-being in the North Atlantic area.” [1]
Russia joining NATO in good faith would change it for sure but would not make it obsolete.
That’s your argument? You googled and pasted in their mission statement?
Who would that alliance be (ostensibly) protecting themselves from? China? Taking that kind of stance (EDIT: against China) would not be in Russia’s interest.
Russia joining NATO in good faith would change it for sure but would not make it obsolete.
[1] https://en.m.wikisource.org/wiki/North_Atlantic_Treaty