Not a direct fix but what I've always done is interact with every post I scroll past. Either up or down depending on how I feel about it. If I'm not sure it just gets a free upvote so if I switch devices I know what I've seen.
Memmy - An iOS client for Lemmy
Not really a good solution, because sometimes the topic just does not interests me, so I don’t want to read it. But because I don’t care, this doesn’t mean that it’s down vote worthy. Also I won’t upvote because I didn’t read it.
No certainly not perfect but can help bridge the gap until the feature is there.
This is the primary reason I’m using Voyager as my default, it doesn’t do hide on scroll but it does have a swipe gesture to hide. I don’t really want to upvote or downvote things just because I personally don’t care about them.
I can't up vote this request enough. Because memmy is amazing as it is. But this would make it perfect.
The Apollo option I used was the button/gesture for “mark everything read up until this point.” It allowed me to dismiss a large amount of stuff at once, not having to click every post. But it didn’t do so automatically before I wanted it to. Marking things read as soon as they scroll into the viewport is a little more aggressive than I want, personally.