There is no minimum market share threshold to discuss the way the software you use is being developed and PostmarketOS will not reach 4% in the foreseeable future (and it probably never will). Desktop Linux only just reached that threshold after decades of work and systemd arguments have been happening for years regardless. The conditions for mobile Linux are considerably less favorable. If we can't discuss systemd until 4% is reached, we can't discuss systemd ever. Which is fair, because the systemd horse has already been beaten to death at this point. But not because it hasn't reached some arbitrary 4% threshold. That makes no sense.

Well you're right but the more postmarketOS grows, the harder it is to switch to another init system