Because political discourse on this platform is deeply unserious. Calling Mamdani centrist is bizarre. It's clear that to you and the members of certain instances everything that is not the complete people's ownership of the means of production constitutes a "centrist". There is absolutely no nuance and it's quite silly. Calling the guy that is running government run grocery stores "centrist" because he hasn't yet nationalized all private entities is really endemic of how this platform is unwilling to move the coalition forward because it is not interested in achieving the goals of socialism; it is only interested in idealizing it through abstract terms but never ever should we dare contend with the real world and how these ideas get implemented.