Segwit is alive, and S2X is dead.
I think you mean B2X that is being sold as Segwit2x is dead but it's trading therefore is not dead but lets go back in time
and see if we can agree
Segwit was proposed, miners didn't like it so it got stopped and they were going to fork but didn't
Segwit2x from Bitcoin dev team was proposed, no one liked it so it got robbed by a new team and they forked (B2X)
Original Segwit then because excepted and has now been activated on 95% of nodes
Some one off wallets will now work with Segwit
No major wallet like Exodus has been converted to work with it
Segwit/BTC coins are not a sub-type of Bitcoins, it's one and the same thing
What seems strange is that Segwit changes the format of the block so did we have a
switch over date and if so on what date and which block because it seems to me that
hidden away we might now be operating with two types of blocks within the same
block-chain because they cannot be mixed on old nodes.
Segwit seems to require a new address format so will need changes to both wallets and exchanges
to work but surly old nodes cannot process any blocks if they contain Segwit addresses or read/write
"extended block" needed for segwit to work
See
https://www.youtube.com/watch?v=C3T-WTZMbNoMaybe Segwit transactions are cached until a Segwit node can create a full block or something
since very few people are using it yet and the conversion needed for the address should be free
since it's not our cock-up that has lead to the move