In giving the right to filibuster to any senator, we have essentially given the right of presidential veto to any senator. That seems an outrageous unbalance of power. But it seems to go even further. It seems strange that there is sometimes there is a mysterious "hold" that people say is on a senate process that does seem even to require that a senator being identified.
The defense of the filibuster is couched in terms of allowing debate. Debate could be allowed by allowing each senator an hour to debate on bill which they can they allocate in any way they wish. The senate could then also allow unlimited written commentary to be filed. So then even unlimited debate can be allowed in a way that does not slow down the process of the senate.
Framing matters. Let's start saying that Senators should NOT have the equivalent right to a presidential veto in a filibusters. No Presidential Vetoes for Senators!