Sure Sara gets content each update, but it seems (at least so far) that the majority of effort has been put in to the other characters + MC scenes instead of hers.
For example: The Sex scene in the last update, was quite wham bam thankyou mam, but most of the animation content was spent on Alice's mom, which could have been spent on the MC + Sara scene and been so much better, instead of multi-angle animation spent on a nobody in the game and Sara getting a quick scene.
Besides a tiny BJ bit at the beginning of the game and a dream scene, there's been zero foreplay or buildup spent on the MC + Sara scenes, more time has been spent on everyone else, which shouldn't be the primary focus of the game, but it is, but it's his game, so whatever. But so far from what i've seen, 90% of complaints have been about the same thing, and the drop in subs that i notice (before the public discord got taken down) could be a reflection of that.