Why? US's upper house is called the Senate, nobody has stabbed in the back by multiple senators once! Plenty of systems are adopted without also adopting the v

Why? US's upper house is called the Senate, nobody has stabbed in the back by multiple senators once! Plenty of systems are adopted without also adopting the values they evolved alongside. China and free markets. Lots of software companies and Agile. Various "democracies" with the system, but none of the values of "don't commit voting fraud, don't intimate opposition voters" etc. Adopting a system isn't predicated on adopting the values the system was designed in.