My girlfriend (29F) and I (30M) no longer watch shows together.

We’ve been together for nearly a decade now, and our relationship has been quite stable. We don’t argue much and spend a good amount of time together, typically engaging in activities like watching YouTube. Sometimes, one of us will be occupied with our hobbies while the other is present—she might watch something while I play video games, or I might give her back rubs as she enjoys music or plays a mobile game. However, we’ve really stopped watching any structured shows together. In the beginning, we shared almost everything, so it feels strange for me to watch something solo now. Over time, her interest in watching shows has diminished significantly. These days, we only catch about one or two shows a year, and she’s even dropped a few mid-series. I’ve hesitated to start many shows that I’m interested in, not wanting to get too far ahead in case she decides to pick them back up. Gradually, I've come to accept that she simply isn’t interested, so I’ve started to watch them on my own. She doesn’t explicitly say she doesn’t want to watch anything, but she rarely seems in the mood and often prefers to do something else—anything else, really—though it isn't as if she avoids spending time with me entirely. I’ve pinpointed two reasons behind this shift, both of which I believe are contributing factors, but I’m unsure how to address them. The first is that she can hold onto grudges for a long time without expressing them. I think she felt hurt when I struggled to enjoy some intense dramas she was passionate about. I made it through several long series—despite her sometimes tearful insistence to watch more—but eventually, I had to tell her that they just weren’t for me. She dismissed the shows I enjoy as "stupid," and I snapped, saying at least they have coherent plots and budgets. Despite apologizing and trying to compromise by watching more of her shows, I get the sense she’s decided not to engage with anything I like, even if many of those shows were ones she wanted me to watch initially. The second reason relates to her aspirations as an artist and writer. She has ambitious ideas for books and comics, but it seems she struggles to take the next steps toward realizing them. She’s been brainstorming since before we met and has accumulated countless sketches, concept art, and story lore that haven’t progressed beyond the initial stages. Although she has immense talent, she’s held back by fear and self-doubt, despite encouragement from both me and her mother. In the last few shows and movies we watched together, she found it difficult to enjoy them, becoming frustrated that she felt unable to pursue her ideas after seeing them portrayed onscreen. I reminded her of the “Simpsons did it” concept from one of her favorite episodes of South Park; I asked if that was why she struggled to move forward with her projects, as she would often feel the need to start over if something resembled her vision. She admitted that this reluctance to compare her work was indeed part of the problem. I tried explaining that many renowned authors and artists openly acknowledge their influences, highlighting how they draw inspiration from other works without claiming their creations are entirely original. Even truly unique ideas are often a response to missed opportunities or existing clichés. Unfortunately, she seemed uninterested, and I’ve noticed her growing frustration while watching shows. I can tell when she’s dismissing something out of concern for how it might relate to her future work, as if she feels the need to critique it to protect her own ego. In short, my girlfriend is reluctant to watch shows with me because of my lack of enthusiasm for some of her favorites, and she finds herself comparing these shows to the stories she struggles to develop.