I will say that if the only way to reach max level in this game is through exploits like that then that very much is a problem and I would be very much against that. I hate when games expect you to jump through hoops to reach the max level when really you should be able to achieve that through ordinary play. However if you actually can reach max level through ordinary play and the killing NPCs and completing quests and thing just puts you a level or two ahead of the curve then I honestly don't think it's a problem. Sure it's an exploit, but it's one that's pretty obviously not how the game is meant to be played, it sounds like it would be kind of tedious and honestly while "if you don't like it, don't use it" is a response I find trite a lot of the time, I think in this instance I would agree with that sentiment. Dev's can't plug every possible hole or emergent design issue, and just because the game technically allows for something, that doesn't mean you have to do it. I know there is a lot of stuff in games that seems tedious to me but would technically be "optimal play," but it's not actually required so I don't do those things. Until I have reason to think that this method that's been brought up will be encouraged by the game in some way, I don't see it as a serious problem, though I certainly won't object to Larian patching this hole.