For any project that steps into the realm of art (Yes, porn games count as art; fight me bitch), there is never a truly objective measure of quality. Everyone has their preferences, and that included in system design. Shocking as it may be to some people, there are people out there who like a degree of grind in their games. Still others who might not like it, but might feel having to go through that to reach the 'objective' adds to anticipation and, for better or worse, that does change the experience.
The other person's response to you mentioned this as well, but if you're going to attempt to take some sort of objective measure of a game's quality, but you base it only on volume of CGs, Scenes, or lines of original script, then you will find near unlimited CG galleries on the Sad Panda that score far higher by those metrics than most actual games would. If you don't care about the game systems and other interactive parts of these games, then I just don't think this format is the right one for you.
Well, I don't care if you like or don't like this game. Play what you like, don't play what you don't. I haven't played it yet so I can't say what I think of it myself, just that your reasoning seemed quite off.
"systems and other interactive parts of these games..." What "systems?" What "Interactive parts"? You press a shittily designed UI over and over until you get enough currency to progress. Then you read a scene, maybe get a new cg, which isn't at all different from these 'unlimited cg galleries' you mentioned (which btw usually come from games, which are both more well written than this, and are sometimes more interactive too, in the sense they have branching stories based on your choices, while this one's completely linear). I don't mind some grind either, but this game just took it to a whole new record where even cheat engine barely helps due to just how bad the UI is and how often many dialogues repeat which you can't speed up or skip.
There ARE different tastes in art and preferences, but ANYTHING, which includes art too, still has objective standards as well, if people are progressively more used to shitty quality in anything, doesn't mean that shitty quality now suddenly became normal and is 'just a difference in taste'. And if a person plays a game by the same person, that functions more or less in the same way, but the new one wasn't nearly as enjoyable because they had to grind way more and listen/watch the same scene a thousand times over and waste hours on simply confusing buttons, or trying to figure out what part of the 20 duplicate buttons to press to get to the required place, buttons that also change from episode to episode, it doesn't mean the game is just not for them, it means there's just too much fucking extra grinding, repeating scenes, and bad ui.
Because again, there's not that much difference between this and princess trainer as far as the game concept goes, except the latter is made with a map that makes much more sense, the ui is way more comfortable, fast and accessible, the skip/fast forward button ACTUALLY WORKS, there's less grind, less repeating dialogue, and the skip button works in that grind and dialogue as well so you get through the scenes way faster too. Oh, and the balance of scenes/cgi to time played is way better too. These are all OBJECTIVE measures which have nothing to do with tastes and preferences, well, i guess unless you have that super rare kink for shitty UI.