I agree, I have had no problems (except for Eclipse, but I vowed to use Eclipse as little as possible well before I upgraded to win10+4k).
Intellij, Cygwin, Ubuntu VMs (DPI scaling worked well in vmware at least), VS Code, VS proper, sublime, idle, cmd, cmder, IDA, Tableau. I can't think of a single application (except for Eclipse) which I noticed not scaling well.