I looked at the comments on a few of your posts, and people are telling you exactly why they are annoyed by them.
Your posts come off as low effort spam, almost like you're treating Lemmy communities like a Discord chat room. Also, you post very similar kinds of things about the same couple of games on the daily, and people probably get tired of seeing samey stuff in their feed.
I've noticed that you're making hyper specific posts ("what do you think about X mission in rdr") in a general gaming community. Try posting those hyper specific questions in the communities for the actual game you're asking about, where people who want to nerd out about some random mission are more likely to be.
It's cool that you're trying to engage people though, I think you just need to get some more practice at reading the crowd here. Lurk more, maybe. Lemmy isn't the other site, we don't necessarily resonate with all the same kinds of content here.
Yeah, not understanding that is a consequence of people not reading the source material, because Tolkien definitely explains exactly why the eagles couldn't do that.
On the other hand, I think it's a valid criticism of the movies that, for all the amazing things he did in that trilogy, Peter Jackson failed to explain something minor that turned out to be a lingering issue for some segment of the wider audience that would consume that adaptation.