claims about analog versus digital... Are they based on something proven and scientific?
I think, it's more promotion campaign, because their speakers too expensive for constantly being in stock in music gear stores and need more arguments for new customers.
But as small company with intention to keep in market they have some other reasons besides mentioned zero latency and no AD/DA conversion.
1) they already have know-how and intellectual properties how to do phase corrected fully analog monitors - now they only need to improve their designs and they definitely do it (A21 have 4 or 5 iterations already)
2) with such analog design they will always be able to repair their monitors ... to understand importance of such possibility, just imagine that you run some facility with 10 multichannel mixing room and you need to be sure that they sound the same and you can move engineers from one to another without issues and any repairs will not alter sound field.
Quotation from Studer sevice manual
When ordering a complete backpanel/amplifier assembly or a power amplifier unit, it is mandatory to declare the speaker type and serial number (as indicated on the speaker's backpanel). Only if these conditions are met, the manufacturer can ensure that the desired spare part is shipped with correct pre-alignments.
While when you make speaker from AD codec, DSP chip, DA codec and some chipamp you can't really be sure that your spares will be available for 20 years. And if something will change or discontinued, backuped firmware will not help much.
3) most probably there are not many unemployed proven good engineers in digital audio domain and to keep up with the best standards they will need to outsource AD/DSP/DA board from some Weiss, Merging or Nagra with their prices. Profits are not obvious for me. And any studio that can afford PSI equipment definitely have at least decent DA conversion already.
I don't really like an idea of having so much opamps in signal chain, but that's just acceptable in industry and all recording equipment already have a lot of them inside. I'm not sure that they will have huge sonic improvement if all that will be replaced with DSP control, but price will definitely rise. So, they decided to upgrade transducers as most distorting pieces and they go that way.