Here are some past discussions about reader modes, where the motivation for this project came from:
The most underused browser feature: reader mode - https://news.ycombinator.com/item?id=28286493 - Aug 2021 (357 comments)
How does Firefox's Reader View work? (2020) - https://news.ycombinator.com/item?id=30864311 - Mar 2022 (102 comments)