Zotero and AI have this covered now. If there's one thing AI is good at it's summarising crappy formatted papers. Never understood the 2 and 3 column thing. Horrendous way to format something.
The comments you write in to Zotero are not what paper is about - abstract covers this well enough - it’s about what you found interesting or useful about the paper.
2-column format has narrower columns, which means that your eyes move more vertically than horizontally while reading it. That is considered conducive to “skimming” long texts if you’re a “speed reader”.
Do you mean that you’re using AI as a search engine for your local bibliography? I haven’t seen any AI plugins for Zotero.