Every now an then I try the new UI, I haven't in a while though. Every time the experience was the same, horribly slow and confusing.

I think the Reddit plan was to switch the users to an eternal scrolling, sort of like Facebook, to keep users on the site longer, but that really ruins the experience for pretty much everything but pure entertainment.

If anything I'm all little pissed at both Facebook and Reddit for killing forums, than the changing their platforms that aren't really suited for forum like discussions when they discovered that it's not actually profitable to run forums. The communities on both have devolved over time, so it's perhaps not a big loss. Reddit in particular have grown to have what I would call "accepted opinions", they may differ slightly in different sub-reddits. The Reddit community is, in general, stubborn, narrow minded and intolerant for different opinions and world views, but disguises it as left leaning politics, anti-racism, feminism and inclusiveness while behaving exactly like the people they claim to be against.

There's still a few positive and supportive sub-reddits, but the main ones are lost.