As I suggested elsewhere in the thread, this is a movement that takes its place in a long tradition of French ultra-Catholicism that was very much at home under Marshal Pétain. I'd hesitate to call it a sect. It doesn't proselytise much, for example.

However, other Catholics who didn't join the schismatics are tempted by a conservative drift. Ratzinger is of course giving a sign that it's perfectly in order to drift that way some more.