Not that it wouldn't appear, but that it would be weighted more harshly against. Specifically because their community upvotes in higher proportions than others (either due to upvote bots or just an over-enthusiastic / fervent community), to such an extend that breaks algorithms, and so the relative worth of their posts is set to be lower than other subreddits.

For real numbers, there are ~300k the_donald subs. If you are not a sub (and use their subreddit style) they have intentionally stopped you from up or down voting their posts or comments, and if you are a sub there is only an upvote button (seriously, something something safe spaces…). Looking at their front page, every single post has between ~3000-6000 "points" (which, taking spam magic out of the mix, means roughly that many upvotes minus downvotes).

Contrasting that, there are 9 million DIY subs, and most of their posts on their front page have <100 points, where a couple of ourliers have ~5k.

Or, there are 11 million r/news subs, and their front page consists of the top 4 posts being in the ~6000 points range, while the rest of that page is more in the hundreds.

/r/all isnt the front page. /r/t_d is not represented on the front page.