If you call it M167, you may find different stuff. L165 seems to be its near kin, so that one also needs looking at -- before making wild guesses about the Ice Age, the Great Flood, or something else totally too early, under L176.2.
I'm trying to work down the other main branch of Z196, where the N/S Cluster is still lurking just out of sight -- and eventually one comes to Z278, enroute downstream to M153. The latter is the only other Z196 subclade that has known its terminal SNP for several years. Some of this may get sorted fairly soon; the first available tests at FTDNA for new SNPs in this line were in Batch 454, which is now cooking.
Did you (Brousse) notice that I took a stab at translating your ancestors' Huguenot wedding announcement? Per your request, on that other thread.