You can disagree with it, just as I can disagree with yours LOL. This is all anecdotal. My experience with doing countless work on instruments as well is that there are times that I have found locking tuners to be the best option in a given situation, and others where I haven’t or just as you put it, It didn’t really matter or make enough of a difference to be worth it. I can give you plenty of anecdotal stories, just as I’m sure you can do the same.
Now this whole faster than locking and cutting tuner business - you are really going to have to demonstrate that one, I would surely love to see it. I’m not sure how any other method would be on the same ease or speed scale as some of those tuners can be.
Yes and the slot cut can also be a huge issue here as well, where the graphite could only do so much. At this point though, it’s sort of out of reach in terms of a simple layman’s fix and requires more skilled work than just throwing some lube somewhere, locking tuners, or a creative stringing method,