It is useless as a global currency now, and any more complicated smart contracts built on top of it need trust in a third party, eventually, if it's ever built.
All it has left for it is brand recognition and large transactions as a settlement network.
The current price increase is obviously because people need to be in Bitcoin before this upcoming attack. Because if there is a back and forth fight over the hash power, you won't know who is the winner immediately.
Cardano was founded by the same people who originally founded Ethereum, and they also maintain Ethereum Classic. Their team has leading computer scientists and cryptographers on board, such as Phil Wadler. It addresses all the shortcomings of Bitcoin and Ethereum and is based on scientific research instead of hacking.
Better to leave random warehouses in China to control the entire pool? How does supporting asics matter in the least other than making it less accessible?
In the short term, true. The same could have been said of integrated circuits at one point. ASIC manufacturing will become cheaper and easier.