Right now, any one senator can stop a vote on any bill by announcing they filibuster it.
That used to (decades ago) require them to stand and talk as long as they were able, to delay voting on the bill.
Now without the “talking filibuster” requirement, it becomes trivially easy for any senator to stop anything they don’t like.
A filibuster can be broken, and a vote can be forced to happen, if 60 of the 100 senators agree to it.
That almost never happens, as no one party ever gets a 60 seat “super-majority”.
Removing the filibuster will allow most any bill to pass with a standard 51% majority.
Stopping the minority party from blocking everything they don’t like.
The rules of the Senate itself can be changed with with a simple 51% majority, since they aren’t Laws that govern the land.
So it is possible to eliminate the filibuster without requiring a filibuster breaking super-majority.