If index funds create larger voting blocks of shares, wouldn't that create a more powerful pool of voting power to influence changes than if all shareholders we

If index funds create larger voting blocks of shares, wouldn't that create a more powerful pool of voting power to influence changes than if all shareholders were voting individually? Index funds could turn over voting control to a proxy/research based voting service or survey their investors to determine how to vote. I'm embarrassed to admit I actually don't know the voting policies of the major index funds I'm invested in (VTI, AGG mostly).