It's a Google Drive link, so it could very easily be a PDF or docx or anything with executable code; and I avoid reading random PDFs online unless they're provided by a reputable source. I also didn't click the super long link here.

And, since it's Google Drive, I don't want to deal with having to open the link in a private browser. For the person saying "isn't it easy just to open it in a private browser?" sure; but it's also friction I don't feel like dealing with, especially since it could easily be a PDF or whatever and my concerns remain.