Thanks for the post. 
I actually have written a similar article, but from a different point of view: https://steemit.com/cryptocurrency/@bluephoenix/bitcoin-gold-and-how-to-deal-with-it-as-investors


Personally, i think BTG will live truly to Satoshi's wish - a decentralize currency where power is dedicated to the mass. But I agree with your point, many GPU farms will target BTG for short term gain after ETH moves to PoS. However, the number of POWERFUL GPU farms is far less than those ASIC, and normal people can join the mining business as well. Thus, the power will be more decentralized compare to those BTC and BCH and also LTC...etc.

The question now is what the "owner" of this BTG will do in the long term. I have checked their website and seems like nothing is solid over there (still pretty early to judge). Is this another "vapourware" coin that creates money out of thin-air? Honestly it is hard to say. If BTG has a good team, a solid roadmap and a clear mission, it will survive... otherwise, this will be another "sh!t show".

Btw, upvoted and followed :).