GNOME tries to set a high standard of polishedness, look-and-feel, and simplicity of design. This is not wrong and makes GNOME good looking and easy to use for a less savvy user. But this has some drawbacks.

For a more savvy user that knows what he wants to do, the simplistic interface gets in the way and wastes time. In contrast KDE Will hold your hand less, and get less in your way. Though, when you drop these requirements GNOME becomes very pleasant to use, especially on laptops, which is why I use it on my laptop.

Another drawback is that GNOME developers will not ship something that doesn’t fig their standards of usability. This adds to the polishing, but it means you will miss out on features, for reasons like “the options in the settings would be confusing for the users” until they are satisfied. E.G.: fractional scaling and vrr. On the other hand, KDE Will ship things that are less polished, but at least you have it.

Also some applications will work suboptimally on GNOME with Wayland, because of client side decorations.