Segwit would open up many attacks on the Time Locking System , included in deadwit,
say a hacker finds a way to break the time lock early , they will be able to steal BTC like crazy and it could be months before anyone knows they were robbed.

That is not Segwit, that is LN. You are confusing two completely different things.
That version didn't gather much support if any. Bitcoin scales very inefficiently on the first layer, that's why it requires a secondary layer.