I have read Can someone please explain FIBRE to me like I'm 5 and why is it useful? then https://bitcoinfibre.org/ and https://github.com/bitcoinfibre/bitcoinfibre.
But I still do not understand, is it in use today in 2023 and where, how?
My understanding is that it is not because https://github.com/bitcoinfibre/bitcoinfibre has had no commits since 16/01/2019 and it was set to read-only on 15/01/2020.
If it is not in use, what happend to it?