Personally, I consider it just a matter of cultural differences. I mean desexualizing breasts won't solve the underlying problems of sexism in our culture. Something else will just be used as a vector to dehumanize women.

Also like... speaking from personal experience breasts are certainly an erogenous zone. I do often wonder if that's also just because they're sexualized and it's a physiological thing but the response to breast stimulation is really strong so I dunno.