Rejections from journals are not uncommon and sometimes it's for somewhat questionable reasons.
Uploading the manuscript to a preprint server and/or submitting to another journal, which Adamala is doing/planning to do, is the normal response.
Sending it to journalists beforehand is what I consider an overreaction.
If you have something so truly revolutionary that everyone can see with their own two eyes how awesome it is you don't have to rely on a middleman to bless it. "Ok your loss"
It would only be effective if the significance of this work is clear. They certainly felt this message needed to reach people, and that it did work makes it self evident they were probably right.