May I ask why this is a problem / requires a warning?
Engaging one's brain to analyze a denser standalone document can be somewhat painful after one's grown accustomed to the intellectual diarrhea of the blogosphere.
PDF renderers have been historically insecure due to the PDF format being a complete mess
I see. Thanks for explaining.
Warning. If PDFs are too much for your browser to handle, you may want to use a different browser that doesn't have this problem.