I think I play versus the faction maybe once in 20-30 games, I think there are more Harmony players (which isn't the only ST deck) than there are SY players overall. Pure Bounty doesn't have enough points/reliability of drawing golds to compete, GN Bounty is quite draw-dependent and other GN decks do the same with less risk involved, mid-range is dead, self-poison, which I actually think is a good mini-archetype, is dead partly because there's now Harmony going around and it can be quite risky.
Hidden Cache has been dead since 2020, Crimes lived and died with the Drill nerfs. Their scenarios are the worst, maybe only Haunt is worse. It seems this faction is dependent on only 1-2 cards when it sees play and once they get gutted (Passiflora, Drill, Bleinheim Bros), goodbye to the faction for the season. They also nerfed Shady Vendor for whatever reason as though the faction is tearing ladder which it hasn't. The faction gets so many buffs over time but always depends on 1-2 busted cards to carry it over and whatever else you put in to fill the remaining 23 cards. It doesn't have the evergreen AA from NR or the thinning/discard of SK which they can always fall back on when the faction sucks. The only reliable package which gives you points in most seasons regardless of what deck you play it in is self-poison but that depends if NG/Harmony also play poison. I hope they put in more effort into the faction because whenever they nerf it once it leaves the bottom 6th place, it instantly stays there again for the next 3-6 months.
Source: https://www.reddit.com/r/gwent/comments/11podz0/is_sy_completely_dead/