A PDF page can be a mixture of object types
PDF may combine text glyphs, vector paths, raster images, masks, and transparency. An SVG output can represent some content as paths while embedding other parts as pixels. Check what was preserved before assuming the result is a complete vector source.
A page with selectable text may use subset fonts or glyph positioning that does not map to ordinary editable words. If the goal is to edit a headline, extracting text separately or returning to the original design file may be more reliable than repairing complex paths.