That's completely backwards. KDE provides consistent styling and window controls across a wide range of toolkits. GNOME, on the other hand, is incapable of this, particularly on Wayland.

It's sad because I really like the aesthetics and user experience of the GNOME desktop and its applications. However, the inconsistent user interface for non-GNOME applications is becoming a deal breaker as more of them transition to Wayland. These applications have no choice but to create their own title bars and other UI elements, resulting in a mishmash of different looks, controls, and fonts. Many of them don't even include shadows around the windows because they aren't sure if they should. As a result of all of this, many third party applications look hideous on GNOME.

As much as I want to continue using GNOME, I'm increasingly drawn to KDE with each passing day due to this issue. I rely on applications like Kitty Terminal, mpv, and WINE. They all suffer from this issue on GNOME, but not on KDE. Ultimately, if I have to choose between a desktop environment and third-party applications, I will prioritize the applications. I think many others would do the same.