Touching women without their consent in the way that Biden does ALL OF THE TIME is about feeling entitled to women’s bodies. It doesn’t need to be sexual assault or have the overt intention to be sexual to be creepy and wrong. He clearly believes, even if it’s subconscious, just as many at the top of the patriarchal dominance hierarchy do, that women are primarily on earth for their enjoyment and pleasure. You don’t stick your nose into a colleague’s hair in a professional setting and take a big satisfying sniff otherwise!
Continuing to defend him around this makes you come across as someone who does not care about body autonomy for women. Unless that is, in fact, the case, I suggest you stop being an apologist for this highly inappropriate behavior.