Corey Robin, who teaches political science at Brooklyn College and the CUNY Graduate Center, put the Senate's changes to the filibuster rule in perspective:
That is, the U.S. Senate remains a deeply undemocratic institution. It was designed that way, above all to protect those states that insisted on defending their property in human beings -- to defending slavery
Over time more and more democracy has intruded on the U.S. Senate. Only in 1913 did we the people come to be able to vote directly for Senators; until then the members were appointed by often-corrupt state legislatures. I am old enough to remember when the required votes for cloture (getting to a vote) were reduced from 67 to a "mere" 60 in 1975 by a Democratic majority sick of being hamstrung by filibusters.
Yesterday's fix is only a beginning. If we were serious about about democracy, we'd amend the Senate out of existence. Why should a tiny fraction of the population be able to frustrate majorities? That's a real question. Are not elections the proper means to decide the direction of the country?
Another small step for democracy on a long road ...