Remember when LND broke? Twice? Some people just want to see things break.
The chain I'm reffering to is the forked chain. Remember this scenario is about miner power vs user power to push a consensus change.
The economic majority. The people who are buying bitcoin (which will make it more valuable) will dump coins from the obviously broken chain which is now its own token and technically can't be called bitcoin anymore. This drives hash power.
Enable as in to allow or empower someone to do something. Especially something they couldn't do without your help