David is the definition of old-school KDE developer. Do you know how far back his commits go? I remember his name from my first rodeos with KDE when I was a teenager. He was blogging about KDE in 2009 FFS: https://blog.davidedmundson.co.uk/blog/2009/09/
2009 was already after KDE 4 which many agree is the point when things started going to shit.