I think an important part of becoming a better writer is learning how to both criticize things you like and engage with criticism of things you like. This is for a few reasons.
First, it's a key tool to being able to identify what you actually like about the media you enjoy, which can help you replicate or reflect those things in whatever way works for your story without also replicating things that aren't working.
For example, to be able to identify and understand that I find the romance stronger than the other major plot arcs in a book I enjoy--and thus tease out what in the romance I find successful--I have to be able to criticize the plot of it, even though I enjoyed the book overall. It doesn't mean I enjoy the book less, it just means that I am able to separate out what didn't work as well (and why) from what did, so I can more effectively analyze and understand what did work (and why).
Second, it helps you remember that even good or enjoyable things are imperfect, and something need not be perfect to be good or enjoyable. Defeat the perfectionist that lives in your brain.
Last, to improve your own writing, you both need to be able to criticize it and productively receive criticism of it without hating it in the process, which means you need to have internalized that idea that criticism of a thing does not equal dislike of it. You also just have to be willing to criticize things without feeling bad about it, and to take criticism without feeling bad about it
Criticism of a work isn't personal, and the more successfully you are able to separate out enjoyment/like for a work and criticism of it, the better you can become as a writer.
