I always thought we demonstrated power because it was an unavoidable consequence of fighting monsters, to show that the world is not utterly screwed by fiends and such, and most importantly, spread a basic cultural understanding of the do nots of this new world.
Which means getting people educated. Which requires incentive. Which requires being amazing so people can see cool stuff can be done, and providing them with a wholesome path to power so they can see that there are non-evil ways of getting magic so they can do awesome stuff too.
And when they get magic, as a level one Wiz/archivist, and slowly level up, they make lives for themselves, gain context of how easy or difficult the parties deeds were, and then understand their own limits.
Basically show a good example so people don't take up bad habits - and to promote positive mental health in our party by having a positive atmosphere when they go out and about town, especially considering the effects of Damphair* **
The beloved sorcerer king aspect is just a bonus.
Actual question, does Viserys have a guess as to why Malarys wanted Viserys to believe that Malarys thinks, (in an 'this is surprising' kind of way) that Viserys "really does care"?
I've had trouble coming up with reasons why, but then again, I'm unskilled at this sort of thing :/
*How salty the Lannister wand crafter would be if she saw how mages were treated in SD make's me feel good about our (players) own salt levels, but her problems will become our problems in a year or two.
**Damphair is just a stupid stupid name.