This won’t change Congress, which is more partisan than ever. It just means what we have in code now is what we are stuck with for a really really long time.
That's why I included the "or": the other option is that the states will take up the slack (and they will take it up, we're already seeing that after Dobbs).
We're at the scale now where majority rule at the federal level will usually leave 170 million people unhappy. If we can't get anything done at the federal level that might be a sign that we've hit the maximum size+diversity threshold for a functioning democracy and it's time to resolve more of our issues at a smaller, more local level.