Likely cause of Improved Garrote + Iron Wire more than anything.
Being able to instantly silence an entire pack of enemies is crazy useful, specially at the beginning of a pull, forcing casters to get into melee range.
Theres a reason this talent got nerfed after all, but its still a VERY solid utility Sin has.
Sub is good, but it can be harder to play in M+ due to the way the spec plays, being centered entirely around doing burst dmg, so if you mess up your CDs, it can leave you lacking with certain pulls.
At the end of the day, play what you prefer.