I work in IT, and the struggle with backups is always pricetag: how much is worth the cost, especially if it's a subscription. Considering Tess has at least two other real jobs (i.e. contracted salaries, and income sources she can put on a resume) with one of them being her own business, guess which projects will be prioritized in her backup subscription and which will be "worth the risk" to leave unbacked up, especially if one of those projects is a sponsored hobby. She could quit the game right now, and actually increase her income due to more time dedicated to her actual employment, so be nice. From what I understand, the game project itself was "backed up", and recovered, while the lost asset library she specifically mentioned included things like expressions, like a specific way that a character smiled, had to be identified as lost, and then reacquired.
As for content, remember that she's making at least 3x, if not 4x, as much content as you see on an individual playthrough due to the diverging paths (D/S, G/E, 4 Sponsors, secondary girl relationships, K-rank, etc.), so just because it may not seem like much in an individual update, remember that you're seeing only about a third of the update. Of course said third tends to be rather beefy anyway.