If you want to get pedantic anything that’s not exactly the same abilities for every character runs into that same issue. Because we can break the pillars down into sub pillars and those down until we reach individual scenarios and on this level it’s apparent that different abilities are stronger in different scenarios and short the DM trying to equalize out the scenarios for each PC and their abilities, there’s not your kind of balance here either.
In short, what you mean by balance isn’t what most of us mean by it. Balance for the rest of us is more of a close enough thing and based on a more stereotypical campaign. The further you are from the stereotypical campaign the less likely things remain balanced. And even that’s okay because we aren’t looking for perfect balance. Besides as long as we have some idea the campaign will be heavily social or exploration focused we can make our own evaluations about characters most suited to that campaign style and what we find fun.