Even when Chuck Schumer, the current Senate Minority Leader, said that he regretted that his party used the nuclear option to override the age-old Senate method of the filibuster, CNN published  an article about how the Democrats are not worried about it.
The nuclear option is where the filibuster is nullified, and a simple majority vote is needed instead of reaching a sixty-vote-threshold (which was needed to override a filibuster).
Here’s what CNN said about how the anti-Trump Democrats are not worried about the nuclear option:
Inside the Senate, some red-state Democrats and longtime institutionalists have fretted that mounting an all-out battle to stop Gorsuch will hurt the party’s chances of winning future fights and further degrade the more deliberative chamber of Congress. The ‘nuclear option’ would lower the bar from 60 senators needed to break a filibuster to 51, and Republicans currently control the chamber with a 52-48 margin.But off Capitol Hill, Democrats — from Washington insiders to progressive activists across the country — are sick of hearing about those precautions.
Fueled by the base’s anti-Trump energy, Democrats across the spectrum don’t want to hand Trump any easy victories. They are insisting on showing Republicans that blocking Merrick Garland’s Supreme Court nomination in President Barack Obama’s final year won’t go without retaliation.