It's called Classic because it is was inspired by Satoshi's scaling solution. And is in keeping with his vision for a Peer-to-Peer Electronic Cash System.
Bitcoin classic is BIP 102
Summary of differences between core+segwit and classic now -
Classic - BIP102
Effective 2MB block capacity + possibly removing RBF + possibly versionbits
5 developers maintaining
Core
Effective 1.75-2MB Block capacity
Version bits , future fraud proofs, signature pruning, simpler script updates, fixing malleability allowing future payment channels.
45 developers maintaining
Both are good.... but Classic isn't that exciting now that they decided to remove 2-4 + segwit as an option.
I must admit that you sound like a pretty reasonable person, so I'll go easy...
50% of the hashrate basically just said NACK to Core's Roadmap™.
Either the Blockstream devs and their wizards quickly alter course and are able to maintain and grow the shreds of support they still possess... or we are very likely to have a "contentious™" and quickly decided fork this spring. Out of those 45... how many do you think will #ragequit and never work on Bitcoin again because they couldn't keep 1MB and pave the way for LN and Blockstream™ products?
Also, nothing stops the two group to team up after Classic forks to work together and implement the Core upgrades later into the now Classic chain. Especially after they realize they (core dev team) can be routed that easily, not like it is good -or bad-, just a fact. Consensus by the majority of the network, is not that how bitcoin developing supposedly?
So, why is that not an option? Because rage??