As was pointed out elsewhere, if he wrote about AOO he would probably be welcomed. As it is, everytime LO goes "hey look at us how good we are" (with nary a mention of AOO), he jumps in and says "but compared to AOO they're - insert derogatory here - ...".
Yes LO is taking a lot of stuff from AOO, because they can, but they're putting lots of new stuff in. And they're up-front about the stuff they're taking - one of the major things IS replacing as much as they can of the Oracle GPL dump with the equivalent AOO Apache-licence stuff.
The trouble with Rob is that (almost, not always) every time he posts it seems a pretty blatant case of sour grapes. If he would just shut up about LO and promote AOO, he'd be accepted a lot better.