I disagree with both of you. I don't even think that any hard fork -- widespread agreement or not -- can really be Bitcoin. In that case, we would just be migrating to a different altcoin. In this case, there is not even widespread agreement, so it should really be considered an attack. The miners propose to starve users of the legacy chain of confirmations (taking advantage of the difficulty algorithm), which will coerce them to join the hard fork.

And services like Coinbase/Blockchain plan to follow the fork without any input from the users, and with little notice to them. They are leveraging their customers (putting their safety at risk) in order to push the network towards the fork.