sure, it's bad UI and bad UX, but many bad UIs and bad UX exist because it would be prohibitively expensive to fix them, fixing them gives no benefit to the business that pays for them (have you stopped Reddit over this and gotten a message to them about it that they will understand?), or fixing them actually is actively against the interest of the business (when you use the back button on Reddit you get new showing of "most popular in this topic", their request count for "most popular in this topic" goes up, you are forced to scroll through bunch of stuff again increasing 'engagement' and everybody who makes decisions about how Reddit should work is happy)