Every opinion on complex reality makes assumptions that are not 100% certain to be correct. I assume you would have considered SimCity more objective if it didn't give low taxes the effect of increasing economic growth, but a centrist opinion is no more certain to be congruent with the truth than a left-wing or right-wing opinion, and is based on just as much speculation/conjecture as the other two.

I personally see the evidence overwhelmingly support the "right wing" view that low taxes and an absence of restrictions on contract freedom bolster economic growth, and I think that is what most analyses by economists conclude, which is why leftists have had such a problem with the Economics field for such a long time, and why Economics has had held out so long among the social sciences in becoming dominated by those who hold left-wing views (though that's been changing in recent decades).