In my experience, every open source PDF Reader/Editor, is ATROCIOUS and messes up the formatting big time. I wish there was an alternative out there that was as good as adobe, but as with all of their other tools, the alternatives always leave much to be desired.

And then adobe takes advantage of that fact (Their product is second to none), and rail their customers by making their products expensive AF.

TLDR: Adobe products are AMAZING. Their pricing structure and marketing techniques and straight up disrespect to their customers is absolute garbage.