Not from BMI, but what the heck....
Can't comment on chute deployment but doesn't the standard briefing card talk about removing the cover panel?
If the A4 sheet is a supplement you need to read the two together.
You might want to consider yourself lucky that you get some additional info in the exit row - many operators don't even give a verbal brief!
If you feel that strongly about it write to someone at Director level in the company with responsibilies for safety.