Link to tweet: https://twitter.com/petertoddbtc/status/931547098625052672
Scrolling through the thread, there is a lot of good info. Topics such as block size and centralization crop up. Definitely recommended content. I never got involved with the specifics of segwit2x to know how good or bad it is. Awhile ago there was a bug in Bitcoin Unlimited that killed nodes which seems to parallel this bug in segwit. History is repeating itself. A precedent may be forming where those involved with bitcoin unlimited, segwit2x and perhaps bitcoin cash are prone towards doing these types of things.
Segwit2X hasn't failed. The launch of Segwit2X has been postponed. I don't think you have heard the last of the scaling debate.
The backers of Segwit2X didn't want the community to be sharply divided over its launch.