Agree with all of yiz on this one
Those who do those sort of things give us "real" *ahem* cyclists a bad name. I personally will leave the bike rather than cycle without a light - but then, I've seen a few accidents in my time, including some fairly stomach-churning ones. And they were (mostly) caused by people either inadequately lit up or doing stupid things like running lights or coming off pavements
(where they shouldn't have been in the first place anyway) without looking around for oncoming traffic.
But the basic enforcement of the law i.e. running red lights, not having lights, cycling on pavements, is absolutely zero as far as I can see. Even with the increased Garda presence over Christmas I personally never saw one unlit cyclist (and I would say that about 50% of those cycling at night are unlit)being pulled in, even though there were Guards at major junctions and on motorbikes and so on.