This demonstrates again why the US Constitution is undemocratic crap. And another reason to abolish the US Senate. A bill can run the gauntlet of passing through the committees in the House, get passed on the floor of the House, and 41 percent of Senate representing 30 percent of the US can prevent it from ever being voted on on the Senate floor.
There are worse systems of upper houses For example, the House of Lords.
I have seen it argued that the US system is very similar to an elected version of the 18th century British system with an elected monarch and elected peers, and with those two pilates of the state having the levels of power that they had relative to the Commons that they had in the 18th century. Whereas in the UK, the Commons grew far more powerful.
But yes, giving Montana and California the same number of Senators is only better than the British approach of appointed peers