While it's doubtful you'll see ads in KDE's core applications, it would be possible for distributions that wish to further monetize their work to fork these applications, placing ads in them.
Just for anyone scrolling by, the article itself is clickbait. QT is not KDE and KDE uses the open source licensed variant of QT. They are also just giving the ability to easily put ads to applications in QT to give an easy way for developers to monetize their applications. I truly don’t think KDE would be putting ads in their applications as they know the backlash would likely be huge and they might lose some userbase which in the Linux world is very hard to come by.
Just for anyone scrolling by, the article itself is clickbait. QT is not KDE and KDE uses the open source licensed variant of QT. They are also just giving the ability to easily put ads to applications in QT to give an easy way for developers to monetize their applications. I truly don’t think KDE would be putting ads in their applications as they know the backlash would likely be huge and they might lose some userbase which in the Linux world is very hard to come by.