Which browser do you use that doesn't have an integrated PDF viewer?
PDF is just another file format, and compared to websites it's a really light format without active scripting. No tracking, no intrusive ads, no malware, no fishing, just a plain format that displays content and does nothing else.
Web browsers are baggage in that scenario.
And yes, I do talk to people. We do do in-person meetings.
And it's a little weird that you have to downvote every post just because you can't stand that people might have other opinions than you.