Read the article "
It has been 2.5 months since the outage. What have we been up to? We used this time to learn as much as we could from the outage, to adjust engineering priorities based on what we learned, and to aggressively harden our systems. One of our Roblox values is Respect The Community, and while we could have issued a post sooner to explain what happened, we felt we owed it to you, our community, to make significant progress on improving the reliability of our systems before publishing."
They wanted to make sure everything was fixed before publishing
They just got out of their busiest time of year, and taking the time to write an accurate post mortem with data gleamed afterwards seems sensible to me.
They wanted to make sure everything was fixed before publishing