Worse, outside of "we have rebuilt functionality for over 35% of the users", I haven't seen any reports from the people who have ostensibly been recovered.
Next, their published RTO is 6 hours, so obviously they must have done something that completely demolished their ability to use their standard recovery methods: https://www.atlassian.com/trust/security/data-management
Finally, there have been some hints that this is related to the decommissioning of a plugin product Atlassian recently acquired (Insight asset management) which is only really useful to large organizations. I suspect that the "0.18% impacted" number is relative to ALL users of Atlassian, including free/limited accounts, and that the percentage of large/serious organizations who are impacted (and who would have a use for an asset management product), is much higher.