Current Lackey is basically just collateral damage from the universal armored launcher nerf. He really took one for the team, being sacrificed so we wouldn't have to deal with shit like EX tail flip or EX spin. At Lackey's peak (MKXL) he played his game around armor mindgames and command grabs, very similar to Goro. Very safe pressure and the threat of that 45%, "-9" on block armored launcher to keep the opponent afraid to press buttons up close. He could be very scary in your face, but was mostly overshadowed by Goro, since Goro played the same game but with more plus frames, better staggers, advancing mids, faster command grab with much better hit advantage (so he can keep himself in your face), a safe meterless special and a truly safe on block armored launcher. Goro did everything Lackey did, except better, and that's why I played Dragon Fangs over Lackey. So then NRS decided to make it a rule that no one gets 1 bar armored launchers anymore, and balanced the cast around that. Goro lost his 1 bar safe armored launcher but in exchange got completely overhauled. EX punchwalk was redesigned, his normals were improved, he got huge buffs to his neutral/zoning game, and gained a variationless +10 EX special move. When you look at the patch notes you can tell NRS really took their time balancing him around the new meta and made sure to keep his core gameplan intact: Command grabs and armor. Now when you look at Lackey's patch notes, you'll notice he got literally one change.
- Ferra/Torr (Lackey) - Torr Up no longer has armor
Yep. Half of lackey's gameplan gone right there in one line, and no compensation. They didn't even get the name "Torr Smash" right, that's how little they care. He used to open you up by using safe pressure strings to make you mess up and get caught by a devastating armored launcher. Now he has to work his way in, go for his mid and be 0 on block at best. Then what do you have to respect? At best you get checked by a d1, at worst you get grabbed and thrown full screen to begin zoning him out again. Compare that to pre-patch, when he could hit you with an armored launcher twice in one round and take 90% of your lifebar. Lackey just has nothing for the opponent to respect anymore. This character is not going to mix you to death, his overhead is fully reactable and his command grab leaves the opponent in an advantageous situation. Even if they left him alone completely, he would have fallen on the tier list a bit due to MKX's new meta of neutral play, zoning, and safe get-off-me reversals with two hits of armor. The patch was obviously rushed out and Lackey got screwed worse than any other variation in the game. It's like when CSZ got "deleted" except twice as bad.
TL;DR NRS forgot to balance Lackey and as a result made him the new F-Tier. Just imagine day 1 Goro except with no armor on ex punch walk (slightly exaggerating but that's basically the situation here)