As is always the case, it seems like these types of conversations turn into a tug of war of absolutes.
All active speakers are clearly not better than any passive speaker. That would be absurd to suggest. Things are still built to a price point, and if a company is including an active crossover and amplification, concessions are made elsewhere be it drivers or enclosure.
Comparing Paradigm active speakers to their passive counter parts seems useless. The crossover parts quality in the passive Paradigm are going to be abysmally mediocre. Again, things are built to a price point. An $1800 dollar mass market pair of speakers is going to have likely no more than 500 dollars worth of parts involved. Which means, 250 for each speaker. I bet the crossover in those speakers costs dollars. They get the job done, but aren't providing anywhere near the best sound quality.
As for the Bryston Model T, we are talking a $34000 dollar pair of speakers with active crossovers. Amps not provided. This is an entirely different ballgame. This provides the end user plenty of pick and choose ability, while still maintaining the benefits of active crossover construction.
However, again, nothing is absolute. And, what kind of sonic signature is the active crossover imparting on the sound? Nothing is benign in audio.
It would be interesting to see someone take a pair of passive Model Ts, and construct an all out crossover with the highest quality parts. Jupiter or Duelund caps, top of the line resistors, etc, etc.
Compare that in the same system to the active, and see how they compare.