https://www.reddit.com/r/AskOuija/comments/89rukm/hey_vsauce...
If you're not by a desktop, you can verify the missing comments by viewing the link in mobile Safari (in an ironic twist, Reddit's mobile web view is actually more functional than their native app).
I wonder how many people are out there, like you, who have no idea this is going on. The terrible thing about silently hiding comments is that there's no indication that anything is missing, so most people don't even realize it's happening. The only reason I know about this is because my subreddit, /r/AskOuija, often has deeply nested comment threads (due to the nature of the subreddit). Reddit's broken mobile app is actively interfering with the functionality of my subreddit, resulting in a lot of redundant comment replies from people using the mobile app (since it appears to them that these nested comments have yet to be replied to).