One could make the argument that the record number of filibusters was due to the unprecedented amount of way out in left field, progressive garbage that was trying to be rammed through. However, as was stated earlier, they never even tried when they still had a filibuster proof majority.
It's been said countless times and the fact that cannot be debated, the Democrats had a SUPER MAJORITY for a very long time, the Republicans could NOT filibuster anything successfully unless there were Democrats who also had issues.
You don't get to argue against that...it's a matter of record.