What capabilities did this post reveal the existence of? Not many, beyond it having been mitigated somehow and that it didn't cause an outage. The attackers kne

What capabilities did this post reveal the existence of? Not many, beyond it having been mitigated somehow and that it didn't cause an outage. The attackers knew that already, because they'd obviously be able to observe the system during the attack. As for why to write about it, it's a new type of attack that resulted in almost an order of magnitude increase in attack size. That's interesting and newsworthy by itself, and publishing a concrete number gives people an idea of the size of the problem and the trendlines. This is also something that needed a CVE, so it was going to be very public anyway. If nothing is written about it, at a minimum Cloud customers will be flooding their support reps with questions about whether the vulnerability applies to them.