I'm glad you're served by anything you come across. Must be nice to pick any steel and it works the same. I do not have that luxury.
Just yesterday I went from cutting boxes and tape to stabbing and chopping whole tilapia that were frozen as hard as a rock. When I was chopping one I tried just a little too hard and skipped right off the fish bouncing the edge right off the concrete floor. When I say I was trying too hard that means I was swinging down as hard as I could with far too little control. The knife I used needed to be able to do all that plus be stain resistant enough to hang out all day with quickly thawing fish meat all over it, that is, unless I wanted to wipe fish parts off on my clothes which wasn't going to happen.
There are very few steels that can handle what was required of that knife yesterday. Impact toughness, lateral toughness and strength, abrasion resistance, and hardness all needed to be tested in just one day's worth of work. My coworkers thought I was crazy until they saw what I was doing and what the knife stood up to. It sure as hell beat what they were doing to open the fish up by trying to throw them as hard as they could against the wall, stomping on them, and hitting them with a hammer. That's stupid. That's what people resort to when they don't have the proper tools. There is literally nothing that could do all of what I did yesterday in one package. Some tools may have performed better but it would only perform in one aspect better than the knife I was using. The knife I used could do everything I needed from a tool yesterday. And no, most steels couldn't have performed nearly as well, relatively speaking. Hell, even I was impressed after what I put that knife through yesterday and how well it performed.
So yes, steels matter. Maybe not to everyone, but for those who need the right tool need the right steel. For me that's a high toughness, high hardness steel with good to great abrasion resistance. The epitome of what tool steels are supposed to be in a knife.
I can say that a specific company just got a few new customers yesterday if they can get over the fact a good knife will probably cost over $100.