Imo Reddit ruined their site on purpose as that makes users go to the app instead which adblockers have a hard time blocking ads on (unless you have pi hole setup). They also added a ton of extra wasted space to make users scroll longer and thus stuff more ads in and increase user times.

This isn't an opinion, this is a proven fact given that Reddit blocks many subreddits from being accessed from the browser when using the default UI, redirecting to their app, for no reason other than moving users to the app. They do not even pretend for there to be any other reason for they have never given any explanation as to why they do this. It's some of the most user-hostile behaviour I've seen, even the usual suspects don't block basic access.

Good to hear there’s fact behind my opinion. I hadn’t researched it deep enough but just figured it out based on my own experience on their site. I don’t visit Reddit often for 2 years now unless I really need to. And when I do, I go to the old.Reddit subdomain.

Question: which subreddits does Reddit block from the browser? Genuinely curious. Are they also blocked from third party apps like Apollo?

Indeed about twitter, I won't follow about 95% of links there due to the issue you mention.