Thank you. I hope this is "this time for realz".
I was one of the proponents of the open letter, and I set up the site to host it. I thought it had the potential to create some momentum behind changing things at the company, and I was disappointed when all it got was a wishy-washy response that gave few solid commitments and then petered out never to be heard from again. A further response was promised but never materialised.
Then, Stack Overflow apologizedapologised. Twice. The first apology was... not great. The second apology - from David Fullerton - seemed to have potential; it acknowledged the major issues and tried not to place fault anywhere but the company, and I hoped that might be the sign of actual change. Then... that came to nothing as well; the commitments it promised were barely delivered, and then only as an afterthought.
And then Stack Overflow decided to gut its community management team by removing two of its most prominent and experienced members. I'd stuck with things up to that point, but that was my final straw - I didn't go out with a bang, just faded into the background and stopped participating.
If these are solid commitments, not afterthoughts, I'm looking forward to coming back - but I hope you can understand that I won't believe it until I see it. Actions speak louder.