The death of the two-thirds rule was inevitable from the moment that Dan Patrick defeated David Dewhurst in the primary. Patrick has always opposed the rule, even before he became a senator. The Democrats’ reduced strength in the Senate made it all but impossible for the remaining members of their party to muster the ability to fend off the majority (one Democrat, Eddie Lucio Jr., joined the Republicans in the vote).
I have always been a fan of the two-thirds rule because it gave the minority a fighting chance to take on the majority and it required a level of bridge-building and consensus to pass legislation. On a more basic level, it imposed “adult behavior on people who might be otherwise inclined.” Unfortunately for the Democrats, their party just doesn’t have the numbers to fend off the majority, so Patrick doesn’t have to worry about bridge-building, consensus, or adult behavior as the presiding officer.