I've also read where airlines are purposefully blocking seats in F. On small frames like 319's that effectively reduces F to 4 seats. If so, are they blocking an entire row (stupid, as that would put four people in row 2 or are they blocking row 1-A and 1-C, 2-B and 2D? That could make sense??
As an exec plat on the routes I normally fly, I have been lucky to be mostly to be upgraded and having those complimentary upgrades go away would be bothersome.