1) "How can anybody be against this move"?
Because it's not proven that this codec is actually patent free and won't face suits from the real patent owners. There's no solid patent review or court review that says it does not have infringe on any patent.
H.264, we already know who owns it and who has patents on it. We know when the royalties is going to start, etc.
We don't know exactly what's the story on this VP8 codec. That's why certain people are not going to support this until they know for sure
2) "No HW Support?"
It's finally open sourced just now, meaning any company can start adding support however they want to. You can't have HW support first and then software. H.264 didn't have HW support in the beginning either, it took years to have the same support. If this open and "free" video codec is what Google says what it is, it'll gain the HW support faster and will overtake H.264.
This codec can be improved by the companies themselves without the actual original company's permission. Something even Apple will love since it'll give them full total control over the source code of the codec.
3) "Apple not on the list?"
Apple is probably being cautious about this as I would be since there's no patent review that shows VP8 does not infringe on any patent. They won't add support for this for another year or two, they'll be the last company to add support. Just like everything else, Apple waits for the mature technology to catch up before adding full support.
4) "Apple looks bad if they don't support this"
Apple doesn't give a crap what we think. Apple is a business that decides in terms of profit, not what we like or if its something open source.
Adding support to something that has no HW support, nonexistent or small source of video encoded in this format, makes no sense for Apple to start supporting it now. They'll add support when it makes sense, not the other way around.