The filibuster worked well when most senators were working in good faith to get the best for their constituents. Compromise is a good thing in that situation to keep the minority from getting screwed.
But, when senators are working for their party rather than their constituents and the party is working for donors, the filibuster is not a good idea. It’s a tool the minority uses in bad faith negotiations in hopes of disappointing the majority of the voters to win the next election.
Exactly right and very well stated!