I don't understand what is difference between someone who attend only RGL in his only regiment and someone who attends only RGL for one regiment and attends events in more relaxed and fun regiment. Why do I have to listen to some sweatytryhard inbred Price voice entire week so just that I can attend RGL?
I cba to rewrite what I've already written in a more simplistic way which you'll be able to grasp (no offence is meant here, I'm just saying I laid the differences out quite clearly).
Double regging on the other hand is inexcusable. In this case double reggers are evidently active enough in the game to keep up with activity in more than one regiment however they have chosen to only go to competitive events in one regiment and spend the rest of their time in other more casual regiments. So unlike the reserves they have the choice to be an active part of the competitive regiments' community and have turned it down for another regiment.
Let's take Kore for example he could attend all 77y events but he only attends RGL. So that's kinda falls fam both have choice.
In terms of your example, obviously nobody solidly can say that they know the current status of activity of every player who participates in the RGL. However that sort of information should be with the regiment leader of the respective players of their regiment. In the example you have given, if Kore only shows up to competitive events for the 77y but doesn't play NW for any other regiments during the rest of the week then he is still committing solely to the regiment he is part of and as long as Gaz is happy with that commitment then no one has the right to challenge it. On the other hand, if Kore only attends 77y competitive events and then goes of and invites or joins other regiments for the rest of the week then he is, by definition, double regging. In the initial scenario, Kore is only playing for the 77y, however he limits his play to a minimal event schedule each week (perhaps he is bored of the game or other reasons etc...), this shows that he regards the 77y as his only regiment and solely represents them, which is the same as someone who can only run on a minimal event schedule due to work, for example. In the second scenario however, Kore would have made the decision to favour one regiment over another (I.e. The one which he attends the casual events) and essentially is using the 77y as a way of still being able to 'dip in' to the competitive scene. Therefore he is isn't representing the 77y or their skill as he isn't really part of the regiment.
And yes you could argue that people who can only attend a minimal number of events a week due to work or other real life reasons, aren't representing their regiment either, but at the end of the day we have to be fair. There is a difference between someone physically not being able to attend many events (so they only attend the most important ones, i.e. competitive events) and someone who blatantly has the time to full participate in more than the competitive aspects of a regiment but chooses to find other regiments to play with (what does that say about their commitment, loyalty and the extent to which they represent their regiment?). Also from a purely practical point of view, it is much easier to address the matter by simply prohibiting players who double reg from participating in the league, rather than assessing every single players' activity in their respective regiments, in order to find which players aren't 'commiting' or 'fully representing' or being a part of that regiment.
Btw I'm just trying to show you with the example you've given, I'm not in any way accusing Kore of doing any of these things ofc.