

I’m not sure this true - PDF is an open standard. The issue isn’t generally with layout and reproducibility - a good PDF maker and a good reader will give you an accurate representation of how it looks on all devices once the PDF is created.
Certainly there isn’t a dedicated FOSS tool for make PDFs; Libre Office and Inkscape do a decent job but not perfect which may be what you’re referring to. And they’re not dedicated PDF makers plus the real problem is building fillable forms and signature tools.
But there is a proprietary alternative called Master PDF that is a dedicated and supports all the PDF standard features I believe; one perpetual license is $80 compared to Adobe subscription based charging. I’m not aware of other options myself but they may exist. But it’s a viable alternative to the “adobe tax”.
Also of course if you have Office 365 from Microsoft, you can use Word to export docs to PDF reliably (in my experience). Obviously as far as you can get from FOSS, but it is an option on Linux via web browser if you have it from work for example; at least you don’t have to pay Adobe but it’s scraping the bottom of the barrel for this threat I know!
I wonder why Apache continues to support OpenOffice. Its barely moved since 2014 and hasn’t even had a security update since 2023. They could archive it as an active project (keep the code available for those who want it) and redirect most users who land on the OpenOffice site to LibreOffice.