Actually, the purpose of PDF viewing and other file viewing software would be beneficial for data recovery confirmation. We don't need distractions and bloatware for sure, but we could use tools that assist in partition management, data recovery, and repair operations. Sometimes that involves checking PDFs.
Don't forget that a lot of hardware manuals come in the form of PDFs these days.
Don't forget that a lot of hardware manuals come in the form of PDFs these days.