superficially this may be true, but in practice false.
there are two approaches
a) simple ... get your sequencer to generate midi thats put on the internal midi bus, then let the poly patcher do its voice allocation
b) dont use voice allocation at all... instead, put your sequencing table in the parent patch, then index this with the voice index. I showed this in one of the first challenges.
you should even be able to use my polyseq objects for this, where the trkId is fed by the voice idx of the poly patch I didnt do this in the help file for clarity sake, but no reason for it not too work.
(note: you can dont need these objects you can do this with simple tables, as per my challenge patch, but the objects cover quite a few things I wanted to do with sequencers, e.g. polyrhythm/polymeter)
(b) is a typical example of Axoloti, where it pays to think laterally (in this case, 'what is a voice' yields the answer)
this is something I like about axoloti, at first you might think something cant be done, but usually with a little reflection, and some creative thinking, you can come up with a solution.