Really? Well, reading the wiki definition of sexual objectification it defines the term in a manner very inconsistent with how I've always seen it.
As far as I'm concerned, sexual objectification simply means appreciating a person's beauty or sexual characteristics without regard to their personality or any other aspect of their personhood or life. And this is something that all humans do pretty much every day.
Anyone who watches porn, for example, I would say is sexually objectifying the performers for their own pleasure - and there's nothing wrong with that - that's the whole point of the exercise. It's how the performers make their wages etc.
Same with DoA, to give a game example. I don't have to give a shit about the girl's characters, I'd just like to see some boobs jiggling. And in the context of the game, that's absolutely fine. It harms no one.
We don't have some moral obligation to discover a person's personality before developing sexual feelings for them. If I walk into my roommates bedroom and see a poster of a model in a swimsuit I'm not a bad person for feeling turned on without asking 'What's she like as a person?' I see her body, and the act of seeing it makes me feel good, in and of itself. That's natural.
We're a highly visual species that values sexual attraction. Expressing and enjoying that in the absence of a meaningful personal connection to a person isn't wrong.
All of this is just imo, of course.
See above.