The fact that each state has an equal number of senators still gives an advantage to smaller states.
The small states deserve equal representation in the Senate, but not disproportinate power, which is what they now enjoy. If each Senator is representing their state as a soverign, then the system makes sense. In representing the people of their states, based on popular election, the system equates, for instance, Wyoming’s 500,000 people with California’s 36 million, which is a grossly unfair system of representation (irrespective of what we think of the values and policies of the people in those states).