Clearly Fellay has had support from enough key SSPX clergy to feel emboldened enough to pull off The Compromise. They have been working on steering the sheeple to Modernist rome, for a long time.
Yes there's definitely a network of those types, and the ones to keep an eye on are the ones in the SSPX media outlets like the Angelus and DICi, and the recently picked French District superiors. And the Germans in Pflueger and Schmidberger's outfit.
I recall once confessing to one priest violent thoughts against Freemasons. He just laughed hysterically at it, wouldn't take me seriously. It really made me wonder.