I’ll pay more attention to Rand Paul when and if he finds the courage to deny unanimous consent, which would do a lot to flummox Harry Reid.
Words are cheap.
He picks his battles carefully.
Most senators trade their consent with Reid to allow them to offer amendments to bills that can get a vote since he controls the whole process.
Rand has been able to get votes on his amendments, sometimes very obscure amendments where he knows he only has 10 votes like for cutting foreign aid but it puts the senators on record.