Very true, and you can see how the other factors kick in very quickly as you start writing more. The longer a story goes, the likes slowly go down, it's just natural. Like how TV shows have higher ratings in the early seasons, it's just the way it goes as the audience drifts away. Also little things, like having a big sex scene and then a breather plot chapter after it, that chapter will get less likes. It's still crucial for the story, so you can't get too fussed by it.
I will admit that having a story with the same characters as a previous story get half the likes per chapter made me obsess over it. Why one but not the next one? I felt the second story was way better, so I couldn't figure it out and it made me doubt that what I enjoyed in my stories was the same thing that the readers did. But there are always other factors, and you'd go crazy trying to figure out exactly why some branches do better than other. There's just an element of random chance too, like other authors have told me that sometimes having a lot of like early in a branch just means other people hit the like button more and it's not due to the quality or whatever.
To the original question though, yeah wicker it does affect me a little if I notice one plot thread is less popular. But not as much as negative comments, like when a long running story branch starts to change and some readers just politely say they don't like it as much now. That feedback make me want to drop branches as I can always tell myself a branch getting less likes is just a result of something else.

One of my readers commented on a chapter yesterday when I mentioned having multiple endings that he only reads one ending or branch and usually just picks the longer one and that's it, which made me realize again that there are so many ways to get enjoyment out of these stories for the audience.
Something that I noticed a few weeks ago reading the CHYOA guide was how there used to be a thumbs down button. That must have been
WILD and I would have gone absolutely insane if it was a thing now, like if I got 10 likes and 3 dislikes on a chapter I'm not sure how I'd handle that lol.