What changed was them not doing anything for 6 months. This is the SOP for reporting vulnerabilities in the tech industry, btw. You inform, give a window to correct, and then go public if they don't. It is not my responsibility to ensure the integrity of FDev's game, it's theirs. PvPers have been facing rampant hacking for nearly a year now which is why we decided to try and do something about it. What do you do when you bring something to the dev's attention and they do nothing about it? You make others aware.
If more people are cheating because of the awareness, I say good. FDev should do something to fix the problem and their community that encourages cheating more than any other game community that I've interacted with. For years, on this very forum, people openly encouraged combat logging (and still do) as a way to avoid legitimate gameplay and FDev did absolutely nothing to help the problem. Mods on this forum openly sympathized with combat loggers and some even combat logged themselves. This behavior absolutely ruined PvP piracy.
Keep in mind though that the specific hack we did our post was locked down a day after our post went up, so the cheats that are being used aren't the ones we posted about.