But I'm gonna play devil's advocate on a few of these, just for some context:
1) the boob song- part of a segment where host is being shown glimpses of himself from a future where he's called the worst Oscar host ever. The "target" of the joke, IMO, was the host, not so much the actresses.
2) The Selma Hayek joke was that this is the moment in every award show where Selma Hayek, Penelope Cruz, or Javier Bardem show up and we can't understand them but don't care cause they're so attractive. So it does also objectify a man as well.
3) The Aniston/Stripper thing: IIRC, the host jokes before Aniston/copresenter Channing Tatum (who is male) that of the next two presenters, at least one is honest about being a former exotic dancer. Tatum was one- his experience as a stripper was part of the inspiration behind the movie Magic Mike. Yes, the joke is that Aniston was/may have been one too, but Tatum's presence does, for me, somewhat change the tone.
Just my 2 cents. Some of the jokes (both on that list and off) were in poor taste. Other moments were really funny. I also do think context and who the "target" of the joke is makes a difference in what's offensive. (And if it matters to anyone, I am female)