No, my taste in knives hasn't changed so much as refined as I got old. I was always a traditional pocket knife guy, and my go-to knife was either a 3 3/4 to 4 inch stockman or a SAK. I grew up in the age long before the one hand wonder knives or even lockblasdes like the Buck 110 that campout in 1963. With a background in two and three bladed knives, everyone I tried a locking knife with just one single blade, I didn't like it. Felt too limiting and too much a one trick pony. I've never carried a locking blade knife much at all, and have all my fingers.
I think I got too used to having three different blades on hand in one pocket size package, or maybe some basic tools that could actually reused fixing something in the middle of nowhere. I used to watch my dad and granddad deal with real life and all kinds of things with their slip joints of modest size, and it made an impression on me. Even a knife with just two blades was nice in having two very different kind of edges on hand. One 'kind of sharp' for opening boxes scraping, or rough use, and one shaving sharp for more detailed stuff needing a cleaner cut.
I admit I'm an old fart now, and at 77 years old I've done some different stuff. Yet I've never been in dire need of the one hand opening thing, and my own personal feeling is, it's an over rated convieance. Yet having multiple blades has been handy on many occasions.
If my taste has changed at all, it's been to slowly shift to smaller knives that fit in my coin pocket. Knives like the Buck 303 cadet, Victorinox cadet or bantam, Case peanut or mini copperhead. Since I'm not skinning any buffalo or fighting Chinese paratroopers dropping out of the sky, they are big enough to cut that I need and not weight down my pants. I already have cell phone, keys, revolver, flashlight, wallet, pipe, lighter, and tobacco pouch. All my other pockets are full of stuff an old retired guy needs on a day to day basis, so the pocket knife is in the watch/coin pocket. A 2 inch to 2 1/2 inch blade is enough for my lifestyle. Down from what I carried 20 years ago.
YMMV.