Eh. I exclusively use https://old.reddit.com/ on both Desktop and Mobile, and never felt inconvenienced.
Our cell phones are large enough today to use 2008-era websites without any additional bells and whistles.
But, of course, people who are already used to whatever UI they chose are going to suffer. Alas.
I've stopped using Reddit now. I liked the freedom of speech and the curiosity of the users. Freedom of speech had been eliminated totally. Curuisity can presumably be found in some niche subreddits - but even the niche subreddits I used to frequent have fallen.
You generally don't make an ad-supported business if you respect your users as human beings, but the old -> new Reddit redesign is something really special - going through with it, and then sticking to it for so many years now, pretty much requires seeing your users as cattle.
Oh, they aren't universally hated.
Most of reddit users have only seen the "new" interface, so they don't know what they're missing.
And when they find out, they're already conditioned to use the "new" UI, so switching is difficult.
The new UI enforces age gating via sign-in (switch to the old UI, and you can get away with "Continue"), which is better for engagement.
The new UI is mobile friendly, which is WAY better for engagement. (Most users are mobile users, even though mobile devices are worse than desktop PCs in every way except convenience.)