A Fairphone employee just confirmed me they can’t publish the EDL loader because of the legal situation and because publishing it would work around parts of the security model of Qualcomm devices.
Makes sense to me, reading this blog post discussing the security implications of leaked / published EDL loaders: Exploiting Qualcomm EDL Programmers (1): Gaining Access & PBL Internals
Unfortunately, this only leaves the option with the official programmer and the protocol analyzer for $1,295.00 for EDL unbricking as @hirnushi pointed out. Reading about the security implications of this, I don’t think even that would be a good idea.
Maybe there’s another way not involving EDL mode, but based on countless other online forum posts of other people in your situation, I think the only way is to send it to Fairphone.