Regular townies turning into spellcasters?

I guess I'm a little confused as to why there is an issue with random townies being generated in the Realm, in which case they are probably practicing magic..but then in the regular world they are just their normal selves. Is it a matter of that they were different for that one moment when you were in the realm and saw them? Shouldn't it be okay that they don't do anything abnormal outside of the Realm, from a RP point of view? Are they actually given Spellcaster status once you see them in the Realm, or are they just randomly there for idk visual effect? I RP as well, and I have 1 save that I have played foreeever, there are a ton of stories in there. And yes, I am one of those who likes to control everything that happens (well most things)..and I still don't quite see the issue with seeing a pre-made practicing magic in the Realm, and then seeing them as their normal selves in another world. But on another note, I haven't gotten this one yet. Can I ask if it's worth it in this thread or is there somewhere else I should go?