I mean like my activity feed is full of who played what and how many achievements and whatnot but the actual user posts seemed to have become much more rare recently. But then I checked some people's profiles and saw that they posted some screenshots and comments and such and that those posts simply have never popped up in the feed and even had 0 likes despite people often liking posts in the activity feed, so I guess nobody actually had those posts in the activity feed. So what's up with that?

Possibly related: https://www.gog.com/forum/general/activity_feed_screenshots_are_not_working

I don't think forum posts ever appeared in the feed except for starting a new thread ('VanishedOne started a topic in the Whatever forum'), but that seems to have gone too: I can see one from eight months ago but that isn't the most recent thread I've started.

I didn't mean forum posts but any text and/or screenshots you can post on your profile

Ok, now I'm pretty sure that when someone posts something on their profile, it just doesn't show up on the activity feed of their friends for some reason. So what gives? I mean like I checked profiles of some people in my friendlist and I saw like a post saying "if someone wants to co-op saints row send a message" or something, but apparently nobody saw that post, because it had no likes (and people who actually check the activity feed also give likes to pretty much anything that appears there).

Does it happen if you have too many friends in your friendlist so that only the stuff about who got an achievement shows up, like it has some kind of a priority over user's posts? Or does it happen like generally?

Yep, the same thing happens to me. Idk about the other users who I befriended here on GOG, but it's been a long time since I noticed a like on one of my posts. Not saying that I'm expecting many of it, it's just that it has reached to a point where I begin to suspect that my posts are no longer visible to my friends, but only the ones related to my gaming activities via GOG Galaxy.

UPDATE: After checking back my posts, there's a possibility that the website could be experiencing a technical problem where it would only show the posts you make sometimes. But then again, it could be just about my posts, which I rather believe so that I could always self-improve. (Since I post my drawings in my profile, I can use the likes to help me know whether they're good or bad)

Now I can't seem to upload any pictures on my activity feed..