Then they go and change it
I bought a euphonium Silent Brass a couple years ago. Just the mute, as my daughter already had the trumpet and Flugel mutes and the electronics. I haven't used it in quite some time. I found it didn't respond well to the lowest register. Now they've changed Silent Brass, and I understand the electronics are closer to a little studio, with effects.
The guy who plays bass trombone in our orchestra uses his SB mute as a straight mute for practice. I'm not sure he's ever plugged it in.