This is a long response but the only way to do it justice. Sorry for stealing the thread.
Yeah, you're right that I shouldn't have said it's a great program. For me putting 15 lbs on my bench in 9 months is great, lol. I stalled out after that but I do believe I could've kept the gains going all through this year if I did more pulling and overhead pressing work. I thought that only doing bench would improve my bench but was wrong, at least for my situation. I was focused on technique building strength but now understand that improving strength can improve technique as well.
My deadlift barely moved because I didn't care to push it that hard. My main focus was on the squat since my technique was inconsistent when pushing heavy weights. I had the option to focus more on the deadlift since it's my strongest lift but I knew that once I fixed the problem with my squat, both lifts would move up. Last year my low bar squat was at 385 for the entire year. I focused only on low bar squat and nothing changed (again only focused on technique). These past 9 months I started from scratch learning how to squat by building the strength for technique. It was a slow process but it has paid off. Today I just hit some huge PRs for high bar and low bar squat. I'll be switching back to low bar in a month going into my meet in December.
IMO, Sheiko works best for a person that has technique nailed down because they wouldn't require regular feedback for technique evaluation - weights at 90+% intensity are used sparingly, which is how people typically evaluate technique. If technique isn't great, then a coach is required that knows how top notch technique is executed so they can make the adjustments necessary through changes in the actual lift or additional strength work to build weaknesses. Otherwise a person like me would continue to build an inefficient lift that hits a plateau and not understand why. My bench technique was good enough to make progress but at the time I just didn't understand what was necessary to keep it going. At this point, I do feel confident enough with my lifts to consider the Sheiko 4x/week program in the future when I need a change.
I do understand that my progress was slow but it wasn't due to the fact that I'm reaching a limit in strength or from using a bad program. It was related to technique and strength weaknesses which I described. I also don't care about world record holders resetting their own records in that time frame because that has nothing to do with my progress. I'll admit that the past 2 years have been the slowest progress I've experienced. But in the process I have learned so much and believe I have set myself up for consistent progress in the future. If I'm wrong, I'll hire a coach to help me out. Two years is also very short compared to how long I plan to push myself.
One factor to include was that I have been recomping for the past two years to stay in the 163 class and my morning weight has been close to 168 the entire time. It's still difficult to fill out the 183 class but I will move up if I don't break the state record in the 163 class at the end of this year, or at least get very close. I'm 5'7.5" if that helps. I honestly don't believe that had anything to do with it. Yes I could gain more weight but that wouldn't address the long term problem for strength.
I will say that Sheiko is a great program for someone that has technique nailed down and understands or works with someone that knows how to evaluate their needs for improvement. It isn't as simple as saying it's a bad or good program. I wouldn't recommend it to someone that requires regular feedback for technique.