I couldn't disagree more.
From a standpoint where you enjoy pregnancy content as a full-blown fetish, at least. Endings only are always meh and a letdown, because it's usually just a scene and a half, and that's that.
Like, imagine you're into huge boobs, but then the female MC in the game is flat the whole game. And only has mind-blowing breast expansion in a single epilogue scene or two. As a corruption culmination demonstration or something. And someone saying "I think huge boobas are best as an ending only".
The above example is just a lazy nod to all the booba effecionados, and a tool to underline character's overwhelimg final sexual corruption, story and flavor wise. And it's exactly the same with commonplace, ending only, lone prego scenes.
But, it all only makes sense, since the majority of smut games devs are simply not into that particular kink (pregnancy)... it's just that it's never a "best in ending only" for those, who actually enjoy pregnancy content earnestly.
Sieglinnde is obviously not into it, so too bad for those who like it (I do). This here is an awesome game nonetheless... because Tifa, NTR and huge titties.