In Adobe Acrobat, hyperlinks are clickable, but in Nutrient, some or all of them are not marked as touchable
Adobe Acrobat, and Apple’s Preview to some extent, use custom in-text hyperlink detection to create annotations on the fly. The PDF reference doesn’t specify this, but it’s a common practice.
Since analyzing the page text can be expensive, this feature is disabled by default. You can enable it by changing autodetectTextLinkTypes to TextCheckingType.all.