Ads on reddit are incredibly deceptive. I'm not sure why advertisers tolerate it. 98% of the ad clicks on mobile are surely fraudulent through being intentionally accidental. The ads are designed to look exactly the same as real posts at a glance, with a username, post date, upvote/downvote arrows, deceptive title meant to make it look like a real post, comment section, share link, and image thumbnail. Reddit users are all conditioned to believe that they can tap a thumbnail and be shown a larger preview while staying on the site. On these ads, it takes them to the advertiser's site instead.