I don't believe Segwit2x is an "attack". It was, at first, an intent of a compromise. And the NYA folks most are businesses that very probably want to move Bitcoin forward - payment processors, wallet services etc. - and I think the reason they signed the NYA is that most of them (except miners/pools) would benefit from low transaction fees.

But I think that regarding the latest news, the most pragmatic stance is to support the Core/1MB chain while being careful with the private keys and treating the 2X chain as an altcoin.

Only if the Core chain really is attacked (double spending/51%) it is likely to succeed, and that would harm the whole ecosystem (and you should get out for a whole while of all the cryptocurrency stuff if you aren't a die-hard fan/hodler). According to the latest news a Segwit2x victory has a very low probability if even Coinbase doesn't use the BTC symbol for it.

Garzik's ICO may be another indication that he's not full-time dedicated to 2x and a loss of the Core manpower would be very problematic.