I think you have to look at your own motives OP.
Your objection isn’t really based on concern for the ‘offenders’ well being or safety it’s that very British notion of “Fair play” and general following of the rules (regardless)…
It’s a cultural thing, drummed into us from a young age; if a British person see someone not in full compliance with the relevant rules, we’re programmed to get indignant, cause an unnecessary fuss and complaining about the false impression such actions might create in the minds of the great unwashed of whatever arbitrary social group you designate the rule breaker as belonging to…
The thing is, it’s all bolleux really, you just want to see other people get caught and punished to reinforce your notion that keeping to the rules is always “best”…
You saw someone break a rule, one intended to protect them from injury/death, and there was no immediate consequences or punishment for the transgressor…
There might not be next time, or the next 100 times he RLJs or indeed ever…
your piss is apparently boiled by such things but you should really ask yourself why, and if it actually matters…
Ultimately life is too short, the sun is shining (here at least), and you’ll ruin your life if you worry about other people adhering to the rules if your not careful…