In addition to that, most criminal convictions have a limitation on how long they count towards your VOG. In most cases they look back 4 years, 2 for younger people (till 23) There are exceptions like in transport (taxi/truck) and high integrity functions like lawyers and interpreters (10 years) and people convicted of sex offences (10 years or longer depending on the function).
There's a similar bug with the age of consent laws where I live. General gist of things is that the age of consent is 17, however if both participants are under 17 and the age gap is small (typically less than 1 year), there's an exception clause (I believe this is known as a "Romeo & Juliet" clause).
This leads to the odd scenario where someone born 16y364d ago can get it on with someone born 16y363d ago, then the very next day it becomes illegal, and the day after that it becomes legal again.