Why Is Overspeed An Issue?

OK I’ll admit that I’m confused as to why so many folk in the UK get vexed about overspeed on digital tachos. If the overspeed report says you were doing 94 km/h for 2 minutes why should I care? Now, 94 km/h for 10 minutes is a different matter as that tends to indicate that the speed limiter is / was defective, don’t think there are many ‘10 minute’ hills in the UK.