I'd be careful saying "this is like an hour fix" and then attributing it to malice, unless you work there. It's like saying the "unknown or expired link" message you get on HN is "like an hour fix...if pg wanted to" and thus pg hates us.

The point is that it's actually a fairly minor interaction issue that hasn't caused any major problems until now, and while we can't know why they haven't fixed it, it's probably because they just hadn't gotten around to it yet.

It's probably more than an hour fix, depending on how they did it. Remember that it is more usable to just let people add someone else without a confirmation. They'll have to add a confirmation on the other side, or a block mechanism, which is a different workflow.