In my experience with my speakers, both ESL and dynamic, there was a benefit to not running the mains full range and using a high pass filter to just send 100 Hz and above to the mains. As you know, I use an active crossover 100 Hz, 4th order, 24 dB slope for both high and low pass.
I can't see why Ayre would have some concerns about an active crossover, really good ones won't do any harm.
I can't see why Ayre would have some concerns about an active crossover, really good ones won't do any harm.