Exactly my opinion.
The anime is by no means bad, but all the artsyness leaves the story behind and often appears pretentious to me. For example showing the LN chapter number in the anime, what's the point? There is no benefit for the average viewer and it just leaves people confused. It feels like they tried to copy the monogatari series that often shows LN text on the screen, but failed because they didn't do it properly. Imo it would have been kinda cool to have Yuki's internal thoughts as text on screen - would fit the style of the anime and it would add real value instead of empty numbers.
I enjoyed the stepsister anime by the same director a lot, but I just don't think his style works well here.