Yes, PostgreSQL users have been whining about of having to "support" Oracle for years. Fine, but also largely irrelevant.
It stops being irrelevant the day I stop saying "someday I will no longer support Oracle for you" and start saying "as of now I will no longer support Oracle for you".
Pissing me off isn't going to do much to encourage me to support your platform for free in the future. Competent FOLLOWERS figure that out.
Oh, financial support HAS been asked for, at the last .LRN conference, which is where the only Oracle users with money congegrate. One university has stepped forward to help out with testing and bug-fixing for .LRN 2.2 but it is not at all clear that THEY'LL be using Oracle a year from now, either...