What I'm saying is that all those counterspells are 1-for-1 or worse, meaning that you're going down a card compared to the other two opponents. That's the opposite of value.
Conversely, a single stax piece can stop several spells/permanents at once, which can be seen as virtual card advantage.
That's why it doesn't make much sense to claim: "no stax, only value" and then load the deck with counterspells.
About
Rings of Brighthearth,
Grim Monolith is 4 mana to untap, +2 mana to copy it = 6 you're producing. That doesn't go infinite,
Basalt Monolith does.
In this deck,
Rings of Brighthearth does nothing unless you have Urza in play. In fact, the same is true all your other "value" pieces.
Moreover, they're all fairly mana intensive cards, only to get one extra construct once in a while, which is not that impressive after all.
OK, you
polymorph your construct into stuff, but you can't even control what you get. I mean, you could get
Deadeye Navigator and
blink Urza, but then you're basically at the same point as before, only with an extra 6/6 on the battlefield (again, not that impressive).
Let's say you have
Arcum Dagsson: you're typically tapping out two turns in a row, then passing in the hope nobody's reacting until your next turn. All this to fetch at best
The One Ring, which is strong, no question, but it doesn't win you the game either.