@t2andreo there are past threads that debate this lovely concept but, if you have walked from Muxia via Fisterra
to Santiago, or Fisterra, Muxia, Santiago you will have walked 100km
to Santiago and will qualify for a Compostella. It doesn't matter that you have walked from Santiago on the
Galician Triangle because the final 100km is
to. I appreciate both the work done by the Pilgrims Office volunteers and the challenges they face. My last "long route" took in the Camino Vasco del Interior, Frances, Salvador, Primitivo, Verde, Norte and Frances again. All of it
to Santiago, just not all of it on the
Autopista Peregrino from St Jean.
Your assertions on the religious / spiritual significance of the Compostella are, of course, correct. I would not seek to suggest that any pilgrim approach the Camino as some frivolous hike through pretty country-side with loads of subsidised lodging houses or the Compostella as some evidence of bragging rights. Pilgrimage is pilgrimage, not a Wots-up opportunity.
@andywild is proposing to walk 1000km, not 100, and, from what we know of Andy from here, he is most likely as much a Pilgrim as I am. Or as any of us.