honestly I doubt many of those who get hung up on steel types can really tell a difference in real world use. Much of what you read from many people is them simply repeating what they hear. That is evidenced by their "users" looking like they are NIB. This isnt to say that there isnt many people out there who genuinely know what they are talking about. Dont get me wrong, I like a good steel if for anything for the pride of ownership of premium steel. But I would be flat out lying if I said that I could tell a difference between 80% of those knives. Im sure there are plenty out there just like me who cant either. What I CANT figure out is if they just try to pretend they have real knowledge and fully know they are full of it or if they really believe their own bull.
That may apply to many people, but, to toss my hat into the ring, I actually use my knives.
I've chipped out 8Cr13MoV, S30V, and VG10, rolled over AUS8, been amazed by 204P taking a edge-first whack into a steel pipe with no damage, been impressed by M4 holding an edge so long that I've only stropped 'em once after owning the knife for two months, had a similar experience with Elmax, and I have grown to love the keen edge that Sandvik takes.
All of those steels have their uses, all of them have their optimal applications - and, as such, none of them are functionally better than the other unless you're talking about specific cases.
There is a huge difference between them, though. Give me a 8Cr13MoV blade and a M4 blade, and you'll have a dull blade and a sharp blade by the end of my work day. Give me a VG-10 blade and an Elmax blade and set me on cutting zipties, and you'll have a chipped out blade and an unscathed blade by the time I'm done. I get caught up in blade steels because I hate corrosion, have a love/hate relationship with sharpening, and like to know that I'm not going to damage a blade by using it for what I think are normal cutting tasks.
I carry a Tuff-Lite at work because it sharpens stupid easily and I only really use it for tape and cardboard. It doesn't need to be razor sharp at the end of the day, and it sharpens so easily I can toss anything at it.
In addition to that, I carry my Hogue EX-01 for tasks that require a beefier or larger blade. Zip ties, several cords of rope, whatever.
Lastly, I have my Tenacious, which I keep at a scalpel-level of sharpness for very fine cutting tasks - anywhere from trimming fine materials to minor surgery (I work at a pet/agriculture store and have had to do some operations)
All three of those steels are perfectly good for what I use them for. None of them would be well-suited to any of the other roles.