As someone who's flown an Airbus for the best part of two decades the terrorism possibility has been dismissed ridiculously quickly both here and in the media. It seems likely this jet came down pretty fast. How many times has weather brought down a big jet in recent years compared with how many times a bomb has?
I've no evidence whatsoever for this possibility, but neither is there for the other scenarios either. Bombs cause electrical failures and pressure loss too, even assuming the alleged ACARS messages are accurate. Of course AF aren't suggesting this - I'd blame it on the weather too if I were them.