"If you take a Red Cross first aid class, or perhaps read said booklet. You will not have to pack it any longer."
That's what these forums are best at IMO --- sharing differing points of view. My perspective is that I won't reliably remember everything about every possible medical procedure that could arise, that these days city-based first aid classes tend to focus more now on "do no harm and call 911 right away", and that one or more backcountry first aid type of books weigh nothing as eBooks on my smart phone.
In fact, I also carry a sheet or maybe two of paper that I put some efficiently compact and small font first aid type of notes onto, just as a backup.
I'm not a gram weenie. I'll admit to on occasion being an ounce weenie, however! :-)