I never heard a single viable argument to how that is better, being able to see through walls and unable to run in combat. Many factors of combat just disappears in that case, fast maneuvering, flanking, the element of surprise and unconventional strategies just does not exist, combat without field of view and running is stagnant and stale, one dimensional and straight forward I might say - simplified.
On 2238, for example, numbers don't mean that much, because you can surprise your enemy, choose an appropriate strategy and beat the odds, but that is not possible if the enemy see you through walls.
I'm not talking about habit, it's not a subject about it. I can get used to that very quickly and I think it isn't a problem to most players, but once you start to compare both styles, obviously the one with most positive effects concerning combat is superior.