Oh, you’re right – your (Abi Noda’s) Leaddev article (https://leaddev.com/reporting-metrics/flawed-five-engineerin...) was published in 2021, not 2022. Sorry for getting that wrong. I think I confused the ad for “2022 Conferences & Events” at the start of the article with the publication date.

It doesn’t seem true that Julian’s Haystack article (https://www.usehaystack.io/blog/software-development-metrics...) was published in May 2021, even though that’s the date at the top of that article. It was apparently originally published in November 2020, as seen in a snapshot from December 2020: https://web.archive.org/web/20201204170826/https://www.useha.... Your article does seem to have been published in April 2021, as you say: https://web.archive.org/web/20210419071103/https://leaddev.c....

Though your article was published later, the talk you gave on this topic (your YouTube link) was from December 2019, before either article. Julian Colina’s article quotes many phrases from that talk directly, so it does indeed seem that you, Abi Noda, are the original source.