People mourn general-purpose computing, because the writing is on the wall for future generations. The living room computer is dead, your average "normie" only has a phone, and maybe a tablet these days. What really opened my eyes to this is how kids I was teaching 3D printing design to were constantly asking if they can use a 3D printer with their phone. Laptops, desktops and servers are becoming more and more niche, and if we don't do anything it dies with our generation (or maybe a generation after that).