I suspect that most of the mandated warnings are seldom ever viewed very closely by the people using the product. I know they weren't in the plant where I worked. And I know how often I read the full safety warnings and use instructions on the potentially harmful products I use around the home, such as lawn care products and drain cleaners, etc.
Yes, it is our responsibility to read and understand the warnings and instructions prior to use. That doesn't mean anyone actually does.
The "crying Wolf syndrome" plays a role. After being duly warned countless times not to stick the product in our ear or ingest it, we tend to ignore the warnings and skip to the part where it tells how much to mix with a gallon to kill the weeds or how long to leave it on to strip the paint, or whatever.
We had MSDS stickers on barrels of stuff everywhere. I remember seeing what they were and the basics of how to read them while we were taking our mandated safety instructions. Never actually read one after the course was over, and don't personally know anyone who did.
Probably not what you safety guys want to hear, but that's the way it works in a lot of places.
And my son's an EHS manager for a big corporation.
You can lead a horse to water, but you can't make him read the darn label to see if it's fit to drink.
