On the one hand, Undertale, Spelunky, Hotline Miami and other popular games have been made in GameMaker and GML is much, much worse than GDScript. At the end of the day, the player isn't going to care.
On the other hand, GDScript is not that great a language. No one would use it as a general purpose scripting language outside of Godot, it's like a more awkward wannabe Python without many of Python's useful features, and outright frustrating features like "pass" and funcref and not actually being able to type-hint signals.
To each their own, but I've never enjoyed using GDScript, which is unfortunate because the framework itself is amazing.
