I felt like it was off so I thought about it a little and I also realize the reasoning for doing what we did with the reaper is flawed. When we converse with Death in the beginning, he indicates that even standing in front of him MC is hazy, meaning that Death and MC cannot pin point one another even if standing in the same room. And if you select the option to talk to him again later he clarifies this. He can't find you. The only reason they found you before, is because of Zillah actively setting out to make it so, Syd also points out that keeping Zillah bound keeps him hidden and there was other mention of Syd's precautions as well previously being part of the reason that Zillah had to do what he did to make MC visible to Azrael to begin with. So even if Death knows you opened a portal we could be anywhere if they don't snag us immediately after we pass through so there would be no reason not to simply teleport and if anything the thing with the Reaper is a greater beacon than just opening the path any other way as it directly informs Azrael that it is happening with accuracy and would probably qualify as a war crime under most definitions of the term heh. I could see maybe this information not coming to the MC if they have been fighting Death too much to even have the conversation to know that their presence would be obscured, or shut down Zillah during the meeting before he could finish giving the report but even if MC doesn't know Zillah certainly does. So harming the reaper is needlessly cruel and a pointed beacon to Azrael which says we are being set up for betrayal and we are somehow missing it if we saw that dialog or it is a plot hole.