It's not just a poor design. old.reddit.com currently has what ought to be considered a show-stopping functional bug: every gallery post (that is, every post with multiple images) has its URL replaced with the empty string, causing it to render as a purple link that goes nowhere. If you instead click the little "comments" link, the post loads as normal.
This has been reported to the admins dozens of times since it first started happening about 3 months ago, and so far the only response is "we're looking into it". I'm not sure which possibility is more damning: the idea that they're incapable of fixing such an obvious regression, or that they literally don't care because they're trying to irritate everybody enough to switch to the newer, uglier version of the site.
https://www.reddit.com/r/help/comments/o6ckmr/threads_showin...
