I hated Pocket too. I already used RSS reader, so, I ended up building https://reading.ashishb.net that creates an RSS feed of articles you add. And yeah, it has a readable mode turned on by default.
I just want to read. And Not go through social features and other fancy things that distract me from actual reading.
Your app looks great! I'm hacking on something related, so always fun to see new takes in this space. Did you try Instapaper as an alternative to Pocket? No intrusive features, great reading experience. I'm a happy paying customer and user for over a decade now.