I've certainly used worse apps over the years. My biggest issue is there's just too much shit that Reddit's tacked on over the years that I don't care about. Chats, live streams, live threads, etc. They also harass you with notifications to "check out new post in x sub" and "maybe you should check out this community" and "your post got 5 upvotes!"
I open the app right now and scroll a few posts down, I have a big post-sized box in the feed asking me "What do you want to see more of?" and then a bunch of topics with emojis as options to seemingly mess with my feed. Scroll a few more, and past an ad I see a post from that's "popular in my country" from a subreddit I'm not subscribed to. You click into a thread and it tells you how many people are "here" (I guess viewing the thread? Why would I care?) I've got 6 notifications that Apollo didn't show me which turn out to just be suggested posts from random communities, suggested subreddits to subscribe to, and notifications that my comment got X number of upvotes.
Also the UI/UX on video threads is unintuitive and annoying. As soon as you click into the comments it starts playing the video at the top of the screen, only allowing comments to take up the bottom portion of the screen. And if you click into the video it makes the comments disappear into the bottom of the screen which is fine, but then you think "swipe up to get the comments back" but no, that just swipes you into a random other video like TikTok.
Using the reddit app makes it feel like you're not using reddit.