The real reddit app doesn’t even have an option to block a particular ad account so when they serve you evangelical right wing ads all day you just have to swallow it.
The inability to block ads I personally find offensive is the #1 reason I'll use a browser with ad block over a native app. Reddit and Tumblr are my two biggest offenders that do not let me properly block particular ads - notably gambling and religion, but also those scam mobile games and other scammy nonsense. I get that they need to pay the bills, but I should have some level of control over what I see.
Which is the real reason that reddit is killing both the third party apps and the mobile site. Same reason that Facebook, Twitter, and Tiktok make the mobile site as painful as possible. If you're using a website in a browser, the user has control. If you're using their app, the company has control.