You don’t have to actually read the entire article. It is perfectly fine it you decide to upvote an article after the first paragraph or two. If it is high quality, I would suspect that enough people will upvote the article that the one person who can’t be bothered clicking on it doesn’t matter. Furthermore, if it isn’t worth your time to click and scroll to upvote, then upvoting that article can’t be particularly important.
You don’t have to actually read the entire article. It is perfectly fine it you decide to upvote an article after the first paragraph or two. If it is high quality, I would suspect that enough people will upvote the article that the one person who can’t be bothered clicking on it doesn’t matter. Furthermore, if it isn’t worth your time to click and scroll to upvote, then upvoting that article can’t be particularly important.