Mostly my problem with it is that it's buggy: frequently clicking a thread or comment chain doesn't actually load, but scrolls the screen as if it did, and other similar annoyances.
On mobile particularly if logged out (or particularly particularly if in a private browsing mode) it's quite aggressive about trying to push you to the app, or letting you view only a couple comments in a thread before saying you're not allowed to see more, or not letting you view some subs at all. "Old" reddit doesn't do any of this.
On mobile particularly if logged out (or particularly particularly if in a private browsing mode) it's quite aggressive about trying to push you to the app, or letting you view only a couple comments in a thread before saying you're not allowed to see more, or not letting you view some subs at all. "Old" reddit doesn't do any of this.