Copyright collection agencies are actually a really good idea for working songwriters. Record companies generally never cough up a royalty cheque ever past the initial advance, but publishers frequently do, so public performance and radio play are a non-trivial earner for many.
The trouble is that when collection agencies pull this sort of outrageous bullshit, they continue to discredit copyright altogether in the eyes of the public. You’d think they’d all have learnt by now. (Although ASCAP’s attempt to collect on ringtones meets with my full approval.)