Readit NewsMy initial draft did include a sentence about freenode in the first paragraph, but after a short internal discussion we decided to remove that, so I rewrote that part. Rather easy and quick, actually.
Now on the why: Libera was a clear cut. Reasons for that are different per person affected, but include e.g. a lot of pain to see what has become of something we put years in, wanting to have a positive vibe / outlook and rather create than mourn et cetera. We always communicated and worked in that way, we also asked people who basically lifestreamed the decline of freenode, which looked a mixture of a bad trash tv novella and a dumpster fire, to please move it out of our main channel. The blog post basically just continues in that spirit.
We are aware of our history, and people interested in it still can find the whole mess floating around on the web. Tech articles, discussions on social media, blog posts of various projects and users etc. I think history is "in our favour" and there is no need to try and hide it. The blog post, however, is about our Birthday and focusses on Libera.Chat, and not on the past that freenode was.
Of course that makes the "from scratch" sound a bit wrong, but as some other user here already pointed out: it isn't that wrong. We built up everything from scratch, and that includes trust. We didn't know how many projects and communities would follow us and migrate over, especially not that early. We are of course very grateful that so many did, and for all the support we received during the very hard first weeks. But we could never be sure if it would go that well.
Hope that clears up that part a bit :)
Edit: removed a typo / half cut off sentence