They also have soooo many good articles (which are helpful not just to RHEL) behind a subscription wall. If you do a lot of work in the rpm ecosystem, they're like the Experts Exchange of Google search, with how many times you see an exact bug report, then you get to the page with a tease of your exact answer, but it fades into the login required bit.
And it used to be open, until Oracle started closing their tickets for paid support with essentially cut-and-paste of access.redhat.com. That's why you can't have nice things.