I said that kiss, not any lesbian kiss in history. Britney and Christina were part of it too and I doubt they would have agreed to a public kiss at an awards show without the generally positive reception t.A.T.u. were getting with both All The Things She Said in the US and the MTV Movie Awards performance that happened five months prior. Madonna had also gone a little quiet on the issue and wasn't kissing any women on stage at award shows, so without t.A.T.u. pushing it back into the public psyche, I doubt it would have happened. We all know Madonna is good at reacting to trends and such but if it hadn't been "popular" and getting attention she would have done something else. She would have doubled down on the anti-war message etc. I don't doubt she would have kissed a woman again, but it wouldn't have been those women at that time.