Is that true of QFG? It’s not my recollection.
It’s definitely true for Trial by Fire, and I’m almost positive it’s the case for both versions of QFG1, although it might not be the case for the EGA version; it’s been a while since I played it. Wages of War and Shadows of Darkness both do not have this as far as I know, but they both have multiple game-breaking bugs that prevent them from being completeable. Dragon’s Breath I’m not sure about. I haven’t played it in at least a decade, and I don’t really ever plan to play through it again unless my son really wants to.
But yes, you’re correct that QFG is largely exempt from this phenomenon largely due to RPG hybrid elements. It’s also why imo QFG stands as the best franchise from Sierra (although I do still love Gabriel Knight and, especially, Laura Bow).