You obviously missed the point so I'll use a more well known & obvious version.
Car insurance companies tell you to never accept or admit blame for an accident, OK ? well the same is true for shooting insurance & the club sec is simply doing their job.
Your insurance would be considerably less happy if any claimant produced a letter from you admitting that whatever had happened was entirely your responsibility and you would be extremely unhappy if due to the wording they were able to avoid paying & put the burden on to you.