You have to go back to the time when the BP100 first saw the light of day, around 25-30 years ago.
First, volumes were much lower back then in most cases; hell, a lot of my gigs were completely acoustic! Pickups, such as the Polytone I had back then, produced a bass sound, but it was a pretty dark, generic sound.
Second, most URB players carried small amps that were seldom over 100 watts. My first amp was an Ampeg SB-12 -- 22 thunderous watts of tube power driving a twelve. Then there was my Polytone that was about 80 watts, and a MusicMan that was 120 watts into a fifteen, and I seldom used much of it. And most of the time your amp had a dark sounding fifteen inch speaker with no tweeter.
What feedback??
When the BP100 came out it was a breath of fresh air. Holy smokes, you could actually hear some string detail, and it almost sounded like
my bass, not just
a bass. And since we were all playing through dark-sounding amps with no highs, we didn't hear the painfully accurate details that the amps of today deliver.
My primary gripe with Fishman is that they did not strongly emphasize the need for a proper impedance match, either by an appropriate preamp or proper amplifier. But then, nobody else did, either -- and that's why most everyone complained about 'piezo quack', myself included, until we all learned how to improve the signal by properly managing it.
And yes, I hate the damn clips, especially since a properly shaped bridge means they can't get a firm grip and pop off all the time.
Fishman has since come out with the Full Circle, which coincidentally runs circles around the BP100 and a lot of other pickups. But as a major power in pickups and one vendor that sells a helluva lot of other gear to every music store, when a non-URB-knowledgeable dealer needs to stock an URB pickup, it will likely be a BP100. It continues to be successful because it is so widely
available. And it can sound good in many cases (that said, in spite of being a Fishman dealer, I don't carry it because of the many better alternatives) Should Fishman discontinue one of their main moneymakers??
Just some perspective.