"not everybody is using bodhi and giving karma" No, but some are, and you treat them very disrespectfully by ignoring their feedback and not communicating.
"one bugreport is even linked here" If you refer to #1572944, that wasn't mentioned until after the very latest (but maybe not the last, hmmmm?) build removal.
"the decision pushing updates to stable is based on kown[sic] bugs and karma" What I'm concerned with is the decision to not push to stable, but instead remove and reset without a word.
If you took half the energy you use on defending bad practices, and used it to improve the workflow, Fedora would be in a much better state. As it is, this update still has no karma, 4.16.7 for fc27 (until a few days ago the latest release) is not even in Bodhi yet three days after release, and the previous one for fc27 still has zero karma.
I've been using Fedora exclusively for almost ten years (since FC10), as I prepared to upgrade to FC28 I thought to myself "Why?". Instead I'll prepare to upgrade to Slackware. That gives the added bonus of not having Systemd shoved down my throat. Thank you for these years, I especially liked FC17 and FC21.
What is the point of testing this? This is the FOURTH build in a row, the update has gotten positive karma eight times, for a grand total of currently zero. It has reached the stable threshold three times, only to be removed and reset all three times, and it's not even in testing yet. Would it be that difficult to push something out? https://en.wikipedia.org/wiki/Bait-and-switch