They want that TikTok brain type of experience. Scroll scroll, "damnthatsinteresting," get mad about Elon Musk, ad, "aawww", astroturfed pumping of upcoming movie or celebrity associated with a project, ad. They'll get that, but it won't be the same.
It's been going that direction for a while. Even if we stated, the discourse quality in Reddit overall has been going down. Many of the "fun" subreddits have lost their point and have become shitty collections of short-videos.
For example take a look at r/HolUp. It used to be a very fun subreddit, with a very specific type of content, but now it's just shitty videos that have nothing that make you think "hold up a minute".
This is my beef with new Reddit too.
I didn't like the look, but I could have learned to live with that, the problem was it changed the fundamental way users were expected to interact with the site.
Old.reddit is a discussion site. Someone posts a topic, either text or link, and other members comment.
New Reddit wants you to scroll through linked content on the front or sub page (with interspersed ads) and commenting isn't the point. If you do want to click through to the comments, they're interupted with links to different posts. Fine if you're just there to waste time and browse memes, intensely irritating if you're after something specific.