Put more simply, time marches on. There's a reason why there are like, three or four companies still making Traditionals* but there are a TON of companies making modern folders, and more throwing their hat in the ring every day. I love Traditionals, but recently, I've discovered that if they aren't perfect mechanically, then the knife is nearly useless. I recently got in one of the new liner lock #23s, and it came with a pull so tight, it's almost dangerous. In every objective way, a Spyderco PM2 or a Benchmade Griptilian, or a Sebenza, or a We Knives something, etc. are superior cutting tools, combining vastly greater ease of use, accessibility, and comfort in the hand. And, at the end of the day all do the same job: cut things. I won't be carrying it, and own it simply because I wanted one in the collection.
That said, if people have a romanticized ideal of the past that they enjoy envisioning, and feel that carrying a traditional knife "jes' lahke graampaw useta carry" is what makes them happy, then that's fine also with no judgement from me especially considering I carry a traditional every day myself. However, there are very real reasons why modern knives exist, and I'm thankful for them in all their complexity, and endless variety. They are the future, and there are plenty of companies who make knives specifically for markets where there are restrictions or laws regarding various attributes. Spyderco and Pro-Tech are two that come immediately to mind. I'm sure there are more.
* At least one of which mainly caters to collectors (like me!)