But scaling is not an issue if you run a big enough screen at native resolution and at 100% scale.
Scaling is still an issue, a lot of plugins and program’s don’t support HiDPI including the OS.
My 40 inch 4k TV is to small to run cubase at 100% scaling, 50 or 55 inch is fine. But at that size speaker placement becomes a challenge. I’m happy using two 27 inch 1440p screen’s in front and an older low resolution screen to the side for plugins I want really BIG.