New reddit is also a shitshow on mobile. Load the page (which takes a while) dismiss the prompt to get the app, continue browsing, click Load More in comments, try to dismiss the login prompt, fail, give up and leave. On desktop new reddit scrolls all the way to the top when you Ctrl+click links in comment threads, it's a mess. I usually use libreddit.

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.

It's not buggy, it's deliberately written to be so annoying that you have no choice but to install the Reddit app. Reddit is a grotesque company, which for some reason gets a free pass for their abhorrent dark patterns.

New reddit is even more unusable on mobile devices, as in, new reddit will LITERALLY prevent you from using the site.